Carbonyloxy-cyanomethyl compounds as antiparasitic agents

ABSTRACT

The invention relates to compounds of the general formula 
                         
wherein Ar 1 , Ar 2 , R 4 , R 5 , R 6 , R 7 , R 8 , W, X, a and b have the significances given in the specification, and optionally the enantiomers thereof. The active ingredients have advantageous pesticidal properties. They are especially suitable for controlling parasites on warm-blooded animals.

This application is a National Phase Application under § 371 of International Application No. PCT/EP02/11087 filed on Oct. 2. 2002.

The present invention relates to new carbonyloxy-cyanomethyl compounds of formula

wherein

-   Ar₁ and Ar₂, independently of one another, signify unsubstituted     phenyl or phenyl which is substituted once or many times, whereby     the substituents may be independent of one another and are selected     from the group consisting of halogen, nitro, cyano, C₁–C₆-alkyl,     halo-C₁–C₆-alkyl, C₁–C₆-alkoxy, halo-C₁–C₆-alkoxy, C₂–C₆-alkenyl,     halo-C₂–C₆-alkenyl, C₂–C₆-alkinyl, C₃–C₆-cycloalkyl,     C₂–C₆-alkenyloxy, halo-C₂–C₆-alkenyloxy, C₁–C₆-alkylthio,     halo-C₁–C₆-alkylthio, C₁–C₆-alkylsulfonyloxy,     halo-C₁–C₆-alkylsulfonyloxy, C₁–C₆-alkylsulfinyl,     halo-C₁–C₆-alkylsulfinyl, C₁–C₆-alkylsulfonyl,     halo-C₁–C₆-alkylsulfonyl, C₂–C₆-alkenylthio, halo-C₂–C₆-alkenylthio,     C₂–C₆-alkenylsulfinyl, halo-C₂–C₆-alkenylsulfinyl,     C₂–C₆-alkenylsulfonyl, halo-C₂–C₆-alkenylsulfonyl, C₁–C₆-alkylamino,     di-C₁–C₆-alkylamino, C₁–C₆-alkylsulfonylamino,     halo-C₁–C₆-alkylsulfonylamino, C₁–C₆-alkylcarbonyl,     halo-C₁–C₆-alkylcarbonyl, C₁–C₆-alkoxycarbonyl,     C₁–C₆-alkylaminocarbonyl, di-C₁–C₆-alkylaminocarbonyl, unsubstituted     phenylamino or phenylamino which is substituted once or many times,     unsubstituted phenylcarbonyl or phenylcarbonyl which is substituted     once or many times; unsubstituted phenyl or phenyl which is     substituted once or many times, whereby the substituents may be     independent of one another and are selected from the group     consisting of halogen, nitro, cyano, C₁–C₆-alkyl, halo-C₁–C₆-alkyl,     C₁–C₆-alkoxy, halo-C₁–C₆-alkoxy, C₁–C₆-alkylthio,     halo-C₁–C₆-alkyylthio, C₁–C₆-alkylsulfinyl,     halo-C₁–C₆-alkylsulfinyl, C₁–C₆-alkylsulfonyl and     halo-C₁–C₆-alkylsulfonyl; substituted phenoxy or phenoxy which is     substituted once or many times, whereby the substituents may be     independent of one another and are selected from the group     consisting of halogen, nitro, cyano, C₁–C₆-alkyl, halo-C₁–C₆-alkyl,     C₁–C₆-alkoxy, halo-C₁–C₆-alkoxy, C₁–C₆-alkylthio,     halo-C₁–C₆-alkylthio, C₁–C₆-alkylsulfinyl, halo-C₁–C₆-alkylsulfinyl,     C₁–C₆-alkylsulfonyl and halo-C₁–C₆-alkylsulfonyl; unsubstituted     phenylacetylenyl or phenylacetylenyl which is substituted once or     many times, whereby the substituents may be independent of one     another and are selected from the group consisting of halogen,     nitro, cyano, C₁–C₆-alkyl, halo-C₁–C₆-alkyl, C₁–C₆-alkoxy,     halo-C₁–C₆-alkoxy, C₁–C₆-alkylthio, halo-C₁–C₆-alkylthio,     C₁–C₆-alkylsulfinyl, halo-C₁–C₆-alkylsulfinyl, C₁–C₆-alkylsulfonyl     and halo-C₁–C₆-alkylsulfonyl; and unsubstituted pyridyloxy or     pyridyloxy which is substituted once or many times, whereby the     substituents may be independent of one another and are selected from     the group consisting of halogen, nitro, cyano, C₁–C₆-alkyl,     halo-C₁–C₆-alkyl, C₁–C₆-alkoxy, halo-C₁–C₆-alkoxy, C₁–C₆-alkylthio,     halo-C₁–C₆-alkylthio, C₁–C₆-alkylsulfinyl, halo-C₁–C₆-alkylsulfinyl,     C₁–C₆-alkylsulfonyl and halo-C₁–C₆-alkylsulfonyl; -   unsubstituted heteroaryl or heteroaryl which is substituted once or     many times, whereby the substituents may be independent of one     another and are selected from the group consisting of halogen,     nitro, cyano, C₁–C₆-alkyl, halo-C₁–C₆-alkyl, C₁–C₆-alkoxy,     halo-C₁–C₆-alkoxy, C₂–C₆-alkenyloxy, halo-C₂–C₆-alkenyloxy,     C₁–C₆-alkylthio, halo-C₁–C₆-alkylthio, C₁–C₆-alkylsulfinyl,     halo-C₁–C₆-alkylsulfinyl, C₂–C₆-alkenylthio, halo-C₂–C₆-alkenylthio,     C₂–C₆-alkenylsulfinyl, halo-C₂–C₆-alkenylsulfinyl,     C₁–C₆-alkylsulfonyl and halo-C₁–C₆-alkylsulfonyl,     C₂–C₆-alkenylsulfonyl, halo-C₂–C₆-alkenylsulfonyl, C₁–C₆-alkylamino     and di-C₁–C₆-alkylamino; or -   unsubstituted naphthyl or quinolyl, or naphthyl or quinolyl which is     substituted once or many times, whereby the substituents may be     independent of one another and are selected from the group     consisting of halogen, nitro, cyano, C₁–C₆-alkyl, halo-C₁–C₆-alkyl,     C₁–C₆-alkoxy, halo-C₁–C₆-alkoxy, C₂–C₆-alkenyloxy,     halo-C₂–C₆-alkenyloxy, C₁–C₆-alkylthio, halo-C₁–C₆-alkylthio,     C₁–C₆-alkylsulfinyl, halo-C₁–C₆-alkylsulfinyl, C₂–C₆-alkenylthio,     halo-C₂–C₆-alkenylthio, C₂–C₆-alkenylsulfinyl,     halo-C₂–C₆-alkenylsulfinyl, C₁–C₆-alkylsulfonyl and     halo-C₁–C₆-alkylsulfonyl, C₂–C₆-alkenylsulfonyl,     halo-C₂–C₆-alkenylsulfonyl, C₁–C₆-alkylamino and     di-C₁–C₆-alkylamino; -   R₄, R₅, R₆, R₇ and R₈ are either, independently of one another,     hydrogen, halogen, unsubstituted C₁–C₆-alkyl or C₁–C₆-alkyl which is     substituted once or many times, unsubstituted C₂–C₆-alkenyl or     C₂–C₆-alkenyl which is substituted once or many times, unsubstituted     C₂–C₆-alkinyl or C₂–C₆-alkinyl which is substituted once or many     times, whereby the substituents may each be independent of one     another and are selected from the group consisting of halogen,     C₁–C₆-alkoxy and halo-C₁–C₆-alkoxy; C₃–C₆-cycloalkyl, whereby the     substituents may be independent of one another and are selected from     the group consisting of halogen and C₁–C₆-alkyl; unsubstituted     phenyl or phenyl which is substituted once or many times, whereby     the substituents may be independent of one another and are selected     from the group consisting of halogen, nitro, cyano, C₁–C₆-alkyl,     halo-C₁–C₆-alkyl, C₁–C₆-alkoxy, halo-C₁–C₆-alkoxy, C₁–C₆-alkylthio,     halo-C₁–C₆-alkylthio, C₁–C₆-alkylsulfinyl, halo-C₁–C₆-alkylsulfinyl,     C₁–C₆-alkylsulfonyl, halo-C₁–C₆-alkylsulfonyl, C₁–C₆-alkylamino or     di-C₁–C₆-alkylamino; -   or R₄ and R₅ together signify C₂–C₆-alkylene; -   W signifies O, S, S(O₂) or N(R₉); -   R₉ signifies hydrogen or C₁–C₆-alkyl; -   X signifies O, S or N(R₁₀); -   R₁₀ signifies hydrogen, C₁–C₆-alkyl, halo-C₁–C₆-alkyl, allyl or     C₁–C₆-alkoxymethyl; -   a signifies 1, 2, 3 or 4; and -   b signifies 0, 1, 2, 3 or 4.

In literature, various compounds have been proposed as active ingredients having anthelminthic properties in pesticides for use on domestic animals and productive livestock. The biological properties of these known compounds, however, are not fully satisfactory in the field of pest control, which is why there is a need to produce further compounds with pesticidal properties, especially for the control of endoparasites; this problem is solved according to the invention with the development of the present compounds I.

Alkyl—as a group per se and as structural element of other groups and compounds such as halogen-alkyl, alkylamino, alkoxy, alkylthio, alkylsulfinyl and alkylsulfonyl—is, in each case with due consideration of the specific number of carbon atoms in the group or compound in question, either straight-chained, i.e. methyl, ethyl, propyl, butyl, pentyl, hexyl, heptyl or octyl, or branched, e.g. isopropyl, isobutyl, sec.-butyl, tert.-butyl, isopentyl, neopentyl or isohexyl.

Cycloalkyl—as a group per se and as structural element of other groups and compounds such as halocycloalkyl, cycloalkoxy and cycloalkylthio,—is, in each case with due consideration of the specific number of carbon atoms in the group or compound in question, cyclopropyl, cyclobutyl, cyclopentyl, cyclohexyl, cycloheptyl or cyclooctyl.

Alkenyl—as a group per se and as structural element of other groups and compounds—is, in each case with due consideration of the specific number of carbon atoms in the group or compound in question and of the conjugated or isolated double bonds—either straight-chained, e.g. allyl, 2-butenyl, 3-pentenyl, 1-hexenyl, 1-heptenyl, 1,3-hexadienyl or 1,3-octadienyl, or branched, e.g. isopropenyl, isobutenyl, isoprenyl, tert.-pentenyl, isohexenyl, isoheptenyl or isooctenyl.

Alkinyl—as a group per se and as structural element of other groups and compounds—is, in each case with due consideration of the specific number of carbon atoms in the group or compound in question and of the conjugated or isolated double bonds—either straight-chained, e.g. propargyl, 2-butinyl, 3-pentinyl, 1-hexinyl, 1-heptinyl, 3-hexen-1-inyl or 1,5-heptadien-3-inyl, or branched, e.g. 3-methylbut-1-inyl, 4-ethylpent-1-inyl, 4-methylhex-2-inyl or 2-methylhept-3-inyl.

Heteroaryl is pyridyl, thienyl, furanyl, pyrryl, benzothienyl, benzofuranyl, indolyl or indazolyl, preferably pyridyl or thienyl, especially pyridyl.

As a rule, halogen signifies fluorine, chlorine, bromine or iodine. The same applies to halogen in combination with other significances, such as halogenalkyl or halogenphenyl.

Halogen-substituted carbon-containing groups and compounds may be partially halogenated or perhalogenated, whereby in the case of multiple halogenation, the halogen substituents may be identical or different. Examples of halogen-alkyl—as a group per se and as structural element of other groups and compounds such as halogen-alkoxy or halogen-alkylthio,—are methyl which is mono- to trisubstituted by fluorine, chlorine and/or bromine, such as CHF₂ or CF₃; ethyl which is mono- to pentasubstituted by fluorine, chlorine and/or bromine, such as CH₂CF₃, CF₂CF₃, CF₂CCl₃, CF₂CHCl₂, CF₂CHF₂, CF₂CFCl₂, CF₂CHBr₂, CF₂CHClF, CF₂CHBrF or CClFCHClF; propyl or isopropyl, mono- to heptasubstituted by fluorine, chlorine and/or bromine, such as CH₂CHBrCH₂Br, CF₂CHFCF₃, CH₂CF₂CF₃ or CH(CF₃)₂; butyl or one of its isomers, mono- to nonasubstituted by fluorine, chlorine and/or bromine, such as CF(CF₃)CHFCF₃ or CH₂(CF₂)₂CF₃; pentyl or one of its isomers substituted once to eleven times by fluorine, chlorine and/or bromine, such as CF(CF₃)(CHF)₂CF₃ or CH₂(CF₂)₃CF₃; and hexyl or one of its isomers substituted once to thirteen times by fluorine, chlorine and/or bromine, such as (CH₂)₄CHBrCH₂Br, CF₂(CHF)₄CF₃, CH₂(CF₂)₄CF₃ or C(CF₃)₂(CHF)₂CF₃.

Alkoxy groups preferably have a chain length of 1 to 6 carbon atoms. Alkoxy is for example methoxy, ethoxy, propoxy, isopropoxy, n-butoxy, isobutoxy, sec.-butoxy and tert.-butoxy, as well as the isomers pentyloxy and hexyloxy; preferably methoxy and ethoxy. Halogenalkoxy groups preferably have a chain length of 1 to 6 carbon atoms. Halogenalkoxy is e.g. fluoromethoxy, difluoromethoxy, trifluoromethoxy, 2,2,2-trifluoroethoxy, 1,1,2,2-tetrafluoroethoxy, 2-fluoroethoxy, 2-chloroethoxy, 2,2-difluoroethoxy and 2,2,2-trichloroethoxy; preferably difluoromethoxy, 2-chloroethoxy and trifluoromethoxy.

Preferred embodiments within the scope of the invention are:

-   (1) A compound of formula I, wherein Ar₁ and Ar₂, independently of     one another, signify unsubstituted phenyl or phenyl which is     substituted once or many times, whereby the substituents may be     independent of one another and are selected from the group     consisting of halogen, nitro, cyano, C₁–C₆-alkyl, halo-C₁–C₆-alkyl,     C₁–C₆-alkoxy, halo-C₁–C₆-alkoxy, C₂–C₆-alkenyl, halo-C₂–C₆-alkenyl,     C₂–C₆-alkinyl, C₃–C₆-cycloalkyl, C₂–C₆-alkenyloxy,     halo-C₂–C₆-alkenyloxy, C₁–C₆-alkylthio, halo-C₁–C₆-alkylthio,     C₁–C₆-alkylamino, di-C₁–C₆-alkylamino, C₁–C₆-alkylcarbonyl,     halo-C₁–C₆-alkylcarbonyl, C₁–C₆-alkoxycarbonyl,     C₁–C₆-alkylaminocarbonyl and di-C₁–C₆-alkylaminocarbonyl; -   heteroaryl that is either unsubstituted or substituted once or many     times, whereby the substituents may be independent of one another     and are selected from the group consisting of halogen, nitro, cyano,     C₁–C₆-alkyl, halo-C₁–C₆-alkyl, C₁–C₆-alkoxy, halo-C₁–C₆-alkoxy,     C₂–C₆-alkenyloxy, halo-C₂–C₆-alkenyloxy, C₁–C₆-alkylthio,     halo-C₁–C₆-alkylthio, C₁–C₆-alkylamino and di-C₁–C₆-alkylamino; or -   naphthyl that is either unsubstituted or substituted once or many     times, whereby the substituents may be independent of one another     and are selected from the group consisting of halogen, nitro, cyano,     C₁–C₆-alkyl, halo-C₁–C₆-alkyl, C₁–C₆-alkoxy, halo-C₁–C₆-alkoxy,     C₂–C₆-alkenyloxy, halo-C₂–C₆-alkenyloxy, C₁–C₆-alkylthio,     halo-C₁–C₆-alkylthio, C₁–C₆-alkylamino and di-C₁–C₆-alkylamino; -   especially phenyl that is, independently of one another, either     unsubstituted or substituted once or many times, whereby the     substituents may be independent of one another and are selected from     the group consisting of halogen, C₁–C₆-alkyl, halo-C₁–C₆-alkyl,     C₁–C₆-alkoxy, halo-C₁–C₆-alkoxy, C₃–C₆-cycloalkyl, C₁–C₆-alkylthio,     halo-C₁–C₆-alkylthio, C₁–C₆-alkylcarbonyl, halo-C₁–C₆-alkylcarbonyl,     C₁–C₆-alkoxycarbonyl, C₁–C₆-alkylaminocarbonyl and     di-C₁–C₆-alkylaminocarbonyl; -   heteroaryl that is either unsubstituted or substituted once or many     times, whereby the substituents may be independent of one another     and are selected from the group consisting of halogen, C₁–C₆-alkyl,     halo-C₁–C₆-alkyl, C₁–C₆-alkoxy, halo-C₁–C₆-alkoxy, C₁–C₆-alkylamino     and di-C₁–C₆-alkylamino; or -   naphthyl that is either unsubstituted or substituted once or many     times, whereby the substituents may be independent of one another     and are selected from the group consisting of halogen, C₁–C₆-alkyl,     halo-C₁–C₆-alkyl, C₁–C₆-alkoxy, halo-C₁–C₆-alkoxy, C₁–C₆-alkylamino     and di-C₁–C₆-alkylamino; -   most particularly phenyl that is, independently of one another,     either unsubstituted or substituted once or many times, whereby the     substituents may be independent of one another and are selected from     the group consisting of halogen, C₁–C₆-alkyl, halo-C₁–C₆-alkyl,     C₁–C₆-alkoxy and halo-C₁–C₆-alkoxy; or -   heteroaryl that is either unsubstituted or substituted once or many     times, whereby the substituents may be independent of one another     and are selected from the group consisting of halogen, C₁–C₆-alkyl     and halo-C₁–C₆-alkyl; -   (2) A compound of formula I, wherein R₄, R₅, R₆, R₇ and R₈ are,     independently of one another, hydrogen, halogen, unsubstituted     C₁–C₆-alkyl or C₁–C₆-alkyl which is substituted once or many times,     unsubstituted C₂–C₆-alkenyl or C₂–C₆-alkenyl which is substituted     once or many times, unsubstituted C₂–C₆-alkinyl or C₂–C₆-alkinyl     which is substituted once or many times, whereby the substituents     may each be independent of one another and are selected from the     group consisting of halogen, C₁–C₆-alkoxy and halo-C₁–C₆-alkoxy;     unsubstituted C₃–C₆–Cycloalkyl or C₃–C₆-cycloalkyl which is     substituted once or many times, whereby the substituents may be     independent of one another and are selected from the group     consisting of halogen and C₁–C₆-alkyl; or unsubstituted phenyl or     phenyl which is substituted once or many times, whereby the     substituents may be independent of one another and are selected from     the group consisting of halogen, nitro, cyano, C₁–C₆-alkyl,     halo-C₁–C₆-alkyl, C₁–C₆-alkoxy, halo-C₁–C₆-alkoxy,     C₁–C₆-alkylsulfonyl, halo-C₁–C₆-alkylsulfonyl, C₁–C₆-alkylamino or     di-C₁–C₆-alkylamino; -   especially, independently of one another, hydrogen, halogen,     unsubstituted C₁–C₆-alkyl or C₁–C₆-alkyl which is substituted once     or many times, unsubstituted C₂–C₆-alkenyl or C₂–C₆-alkenyl which is     substituted once or many times, unsubstituted C₂–C₆-alkinyl or     C₂–C₆-alkinyl which is substituted once or many times, whereby the     substituents may each be independent of one another and are selected     from the group consisting of halogen and C₁–C₆-alkoxy; unsubstituted     C₃–C₆-cycloalkyl or C₃–C₆-cycloalkyl which is substituted once or     many times, whereby the substituents may be independent of one     another and are selected from the group consisting of halogen and     C₁–C₄-alkyl; or unsubstituted phenyl or phenyl which is substituted     once or many times, whereby the substituents may be independent of     one another and are selected from the group consisting of halogen,     nitro, cyano, C₁–C₆-alkyl, halo-C₁–C₆-alkyl, C₁–C₆-alkoxy or     halo-C₁–C₆-alkoxy; -   especially, independently of one another, hydrogen, halogen,     C₁–C₄-alkyl or halo-C₁–C₄-alkyl; -   (3) A compound of formula I, wherein W is O, S or N(R₉); -   especially O or S; -   particularly O; -   (4) A compound of formula I, wherein R₉ signifies hydrogen or     C₁–R₄-alkyl; -   especially hydrogen or C₁–C₂-alkyl; -   most particularly hydrogen; -   (5) A compound of formula I, wherein X is O or N(R₁₀); -   especially N(R₁₀); -   (6) A compound of formula I, wherein R₁₀ is hydrogen, C₁–C₄-alkyl or     halo-C₁–C₄-alkyl; -   especially hydrogen or C₁–C₄-alkyl; -   most particularly hydrogen; -   (7) A compound of formula I, wherein a signifies 1, 2 or 3; -   especially 1 or 2; -   most particularly 1; -   (8) A compound of formula I, wherein b is 0, 1, 2 or 3; -   especially 0 or 1; -   most particularly 0; -   (9) A compound of formula I, wherein Ar₁ and Ar₂, independently of     one another, signify unsubstituted phenyl or phenyl which is     substituted once or many times, whereby the substituents may be     independent of one another and are selected from the group     consisting of halogen, nitro, cyano, C₁–C₆-alkyl, halo-C₁–C₆-alkyl,     C₁–C₆-alkoxy, halo-C₁–C₆-alkoxy, C₂–C₆-alkenyl, halo-C₂–C₆-alkenyl,     C₂–C₆-alkinyl, C₃–C₆-cycloalkyl, C₂–C₆-alkenyloxy,     halo-C₂–C₆-alkenyloxy, C₁–C₆-alkylthio, halo-C₁–C₆-alkylthio,     C₁–C₆-alkylamino, di-C₁–C₆-alkylamino, C₁–C₆-alkylcarbonyl,     halo-C₁–C₆-alkylcarbonyl, C₁–C₆-alkoxycarbonyl,     C₁–C₆-alkylaminocarbonyl and di-C₁–C₆-alkylaminocarbonyl; -   heteroaryl that is either unsubstituted or substituted once or many     times, whereby the substituents may be independent of one another     and are selected from the group consisting of halogen, nitro, cyano,     C₁–C₆-alkyl, halo-C₁–C₆-alkyl, C₁–C₆-alkoxy, halo-C₁–C₆-alkoxy,     C₂–C₆-alkenyloxy, halo-C₂–C₆-alkenyloxy, C₁–C₆-alkylthio,     halo-C₁–C₆-alkylthio, C₁–C₆-alkylamino and di-C₁–C₆-alkylamino; or -   naphthyl that is either unsubstituted or substituted once or many     times, whereby the substituents may be independent of one another     and are selected from the group consisting of halogen, nitro, cyano,     C₁–C₆-alkyl, halo-C₁–C₆-alkyl, C₁–C₆-alkoxy, halo-C₁–C₆-alkoxy,     C₂–C₆-alkenyloxy, halo-C₂–C₆-alkenyloxy, C₁–C₆-alkylthio,     halo-C₁–C₆-alkylthio, C₁–C₆-alkylamino and di-C₁–C₆-alkylamino; -   R₄, R₅, R₆, R₇ and R₈ are, independently of one another, hydrogen,     halogen, unsubstituted C₁–C₆-alkyl or C₁–C₆-alkyl which is     substituted once or many times, unsubstituted C₂–C₆-alkenyl or     C₂–C₆-alkenyl which is substituted once or many times, unsubstituted     C₂–C₆-alkinyl or C₂–C₆-alkinyl which is substituted once or many     times, whereby the substituents may each be independent of one     another and are selected from the group consisting of halogen and     C₁–C₆-alkoxy; unsubstituted C₃–C₆-cycloalkyl or C₃–C₆-cycloalkyl     which is substituted once or many times, whereby the substituents     may be independent of one another and are selected from the group     consisting of halogen and C₁–C₆-alkyl; or unsubstituted phenyl or     phenyl which is substituted once or many times, whereby the     substituents may be independent of one another and are selected from     the group consisting of halogen, nitro, cyano, C₁–C₆-alkyl,     halo-C₁–C₆-alkyl, C₁–C₆-alkoxy, halo-C₁–C₆-alkoxy,     C₁–C₆-alkylsulfonyl, halo-C₁–C₆-alkylsulfonyl, C₁–C₆-alkylamino or     di-C₁–C₆-alkylamino; -   W signifies O, S or N(R₉); -   R₉ signifies hydrogen or C₁–C₄-alkyl; -   X signifies O or N(R₁₀); -   R₁₀ signifies hydrogen, C₁–C₄-alkyl or halo-C₁–C₄-alkyl; -   a signifies 1, 2 or 3; -   and b signifies 0, 1, 2 or 3. -   (10) A compound of formula I, wherein Ar₁ and Ar₂, independently of     one another, signify phenyl that is either unsubstituted or     substituted once or many times, whereby the substituents may be     independent of one another and are selected from the group     consisting of halogen, C₁–C₆-alkyl, halo-C₁–C₆-alkyl, C₁–C₆-alkoxy,     halo-C₁–C₆-alkoxy, C₃–C₆-cycloalkyl, C₁–C₆-alkylthio,     halo-C₁–C₆-alkylthio, C₁–C₆-alkylcarbonyl, halo-C₁–C₆-alkylcarbonyl,     C₁–C₆-alkoxycarbonyl, C₁–C₆-alkylaminocarbonyl and     di-C₁–C₆-alkylaminocarbonyl; -   heteroaryl that is either unsubstituted or substituted once or many     times, whereby the substituents may be independent of one another     and are selected from the group consisting of halogen, C₁–C₆-alkyl,     halo-C₁–C₆-alkyl, C₁–C₆-alkoxy, halo-C₁–C₆-alkoxy, C₁–C₆-alkylamino     and di-C₁–C₆-alkylamino; or -   naphthyl that is either unsubstituted or substituted once or many     times, whereby the substituents may be independent of one another     and are selected from the group consisting of halogen, C₁–C₆-alkyl,     halo-C₁–C₆-alkyl, C₁–C₆-alkoxy, halo-C₁–C₆-alkoxy, C₁–C₆-alkylamino     and di-C₁–C₆-alkylamino; -   R₄, R₅, R₆, R₇ and R₈ are, independently of one another, hydrogen,     halogen, unsubstituted C₁–C₆-alkyl or C₁–C₆-alkyl which is     substituted once or many times, unsubstituted C₂–C₆-alkenyl or     C₂–C₆-alkenyl which is substituted once or many times, unsubstituted     C₂–C₆-alkinyl or C₂–C₆-alkinyl which is substituted once or many     times, whereby the substituents may each be independent of one     another and are selected from the group consisting of halogen and     C₁–C₆-alkoxy; unsubstituted C₃–C₆-cycloalkyl or C₃–C₆-cycloalkyl     which is substituted once or many times, whereby the substituents     may be independent of one another and are selected from the group     consisting of halogen and C₁–C₄-alkyl; or unsubstituted phenyl or     phenyl which is substituted once or many times, whereby the     substituents may be independent of one another and are selected from     the group consisting of halogen, nitro, cyano, C₁–C₆-alkyl,     halo-C₁–C₆-alkyl, C₁–C₆-alkoxy or halo-C₁–C₆-alkoxy; -   W is O or S; -   R₉ signifies hydrogen or C₁–C₂-alkyl; -   X signifies N(R₁₀); -   R₁₀ signifies hydrogen or C₁–C₄-alkyl; -   a signifies 1 or 2; -   and b signifies 0 or 1. -   (11) A compound of formula I, wherein Ar₁ and Ar₂, independently of     one another, signify phenyl that is either unsubstituted or     substituted once or many times, whereby the substituents may be     independent of one another and are selected from the group     consisting of halogen, C₁–C₆-alkyl, halo-C₁–C₆-alkyl, C₁–C₆-alkoxy     and halo-C₁–C₆-alkoxy; or -   heteroaryl that is either unsubstituted or substituted once or many     times, whereby the substituents may be independent of one another     and are selected from the group consisting of halogen, C₁–C₆-alkyl     and halo-C₁–C₆-alkyl; -   R₄, R₅, R₆, R₇ and R₈, independently of one another, signify     hydrogen, halogen, C₁–C₄-alkyl or halo-C₁–C₄-alkyl; -   W signifies O; -   R₉ signifies hydrogen; -   X signifies N(R₁₀); -   R₁₀ signifies hydrogen; -   a signifies 1; and -   b is 1.

Within the context of the invention, particular preference is given to the compounds of formula I listed in the tables, and most particularly those named in the synthesis examples.

A further object of the invention is the process for the preparation of the compounds of formula I, respectively in free form or in salt form, for example characterised in that a compound of formula

which is known or may be produced analogously to corresponding known compounds, and wherein R₄, R₅, R₆, R₇, R₈, Ar₂, W, a and b are defined as given for formula I,

-   a) in order to produce a compound of formula I, wherein X is defined     as given for formula I with the exception of NH, is reacted with a     compound of formula

which is known or may be produced analogously to corresponding known compounds, and wherein Ar₁ and X are defined as given for formula I and Q is a leaving group, or

-   b) in order to produce a compound of formula I, wherein X is NH and     n is 1, is reacted with a compound of formula     Ar₁—NCO  VI,     which is known or may be produced analogously to corresponding known     compounds, and wherein Ar₁ is defined as given for formula I,     optionally in the presence of a basic catalyst; and if desired, a     compound of formula I obtainable according to the method or in     another way, respectively in free form or in salt form, is converted     into another compound of formula I, a mixture of isomers obtainable     according to the method is separated and the desired isomer isolated     and/or a free compound of formula I obtainable according to the     method is converted into a salt or a salt of an compound of formula     I obtainable according to the method is converted into the free     compound of formula I or into another salt.

What has been stated above for salts of compounds I also applies analogously to salts of the starting materials listed hereinabove and hereinbelow.

The reaction partners can be reacted with one another as they are, i.e. without the addition of a solvent or diluent, e.g. in the melt. In most cases, however, the addition of an inert solvent or diluent, or a mixture thereof, is of advantage. Examples of such solvents or diluents are: aromatic, aliphatic and alicyclic hydrocarbons and halogenated hydrocarbons, such as benzene, toluene, xylene, mesitylene, tetraline, chlorobenzene, dichlorobenzene, bromobenzene, petroleum ether, hexane, cyclohexane, dichloromethane, trichloromethane, tetrachloromethane, dichloroethane, trichloroethene or tetrachloroethene; ethers, such as diethyl ether, dipropyl ether, diisopropyl ether, dibutyl ether, tert-butyl methyl ether, ethylene glycol monomethyl ether, ethylene glycol monoethyl ether, ethylene glycol dimethylether, dimethoxydiethylether, tetrahydrofuran or dioxane; ketones such as acetone, methyl ethyl ketone or methyl isobutyl ketone; amides such as N,N-dimethylformamide, N,N-diethyl-formamide, N,N-dimethylacetamide, N-methylpyrrolidone or hexamethylphosphoric acid triamide; nitrites such as acetonitrile or propionitrile; and sulfoxides, such as dimethyl sulfoxide.

Preferred leaving groups Q are halogens, especially chlorine.

Suitable bases for facilitating the reaction are e.g. alkali metal or alkaline earth metal hydroxides, hydrides, amides, alkanolates, acetates, carbonates, dialkylamides or alkylsilyl-amides; alkylamines, alkylenediamines, optionally N-alkylated, optionally unsaturated, cyclo-alkylamines, basic heterocycles, ammonium hydroxides, as well as carbocyclic amines. Those which may be mentioned by way of example are sodium hydroxide, hydride, amide, methanolate, acetate, carbonate, potassium tert.-butanolate, hydroxide, carbonate, hydride, lithium diisopropylamide, potassium bis(trimethylsilyl)-amide, calcium hydride, triethylamine, diisopropylethylamine, triethylenediamine, cyclohexylamine, N-cyclohexyl-N,N-dimethyl-amine, N,N-diethylaniline, pyridine, 4-(N,N-dimethylamino)pyridine, quinuclidine, N-methyl-morpholine, benzyltrimethylammonium hydroxide, as well as 1,5-diazabicyclo[5.4.0]undec-5-ene (DBU).

The reaction advantageously takes place in a temperature range of ca. 0° C. to ca. 150° C., preferably from ca. 20° C. to ca. 100° C.

Salts of compounds I may be produced in known manner. Acid addition salts, for example, are obtainable from compounds I by treating with a suitable acid or a suitable ion exchange reagent, and salts with bases are obtainable by treating with a suitable base or a suitable ion exchange reagent

Salts of compounds I can be converted into the free compounds I by the usual means, acid addition salts e.g. by treating with a suitable basic composition or with a suitable ion exchange reagent, and salts with bases e.g. by treating with a suitable acid or a suitable ion exchange reagent.

Salts of compounds I can be converted into other salts of compounds I in a known manner; acid addition salts can be converted for example into other acid addition salts, e.g. by treating a salt of an inorganic acid, such as a hydrochloride, with a suitable metal salt, such as a sodium, barium, or silver salt, of an acid, e.g. with silver acetate, in a suitable solvent, in which a resulting inorganic salt, e.g. silver chloride, is insoluble and thus precipitates out from the reaction mixture.

Depending on the method and/or reaction conditions, compounds I with salt-forming characteristics can be obtained in free form or in the form of salts.

Compounds I can also be obtained in the form of their hydrates and/or also can include other solvents, used for example where necessary for the crystallisation of compounds present in solid form.

The compounds I may be optionally present as optical and/or geometric isomers or as a mixture thereof. The invention relates both to the pure isomers and to all possible isomeric mixtures, and is hereinbefore and hereinafter understood as doing so, even if stereochemical details are not specifically mentioned in every case.

Diastereoisomeric mixtures of compounds 1, which are obtainable by the process or in another way, may be separated in known manner, on the basis of the physical-chemical differences in their components, into the pure diastereoisomers, for example by fractional crystallisation, distillation and/or chromatography.

Splitting of mixtures of enantiomers that are obtainable accordingly may be achieved by known methods, for example by recrystallisation from an optically active solvent, by chromatography on chiral adsorbents, e.g. high-pressure liquid chromatography (HPLC) on acetyl cellulose, with the assistance of appropriate micro-organisms, by cleavage with specific immobilised enzymes, through the formation of inclusion compounds, e.g. using chiral crown ethers, whereby only one enantiomer is complexed.

According to the invention, apart from separation of corresponding isomer mixtures, generally known methods of diastereoselective or enantioselective synthesis can also be applied to obtain pure diastereoisomers or enantiomers, e.g. by carrying out the method of the invention using educts with correspondingly suitable stereochemistry.

It is advantageous to isolate or synthesise the biologically more active isomer, e.g. enantiomer, provided that the individual components have differing biological efficacy.

In the method of the present invention, the starting materials and intermediates used are preferably those that lead to the compounds I described at the beginning as being especially useful.

The invention relates in particular to the preparation methods described in the examples.

Starting materials and intermediates, which are new and are used according to the invention for the preparation of compounds I, as well as their usage and process for the preparation thereof, similarly form an object of the invention.

The compounds I according to the invention are notable for their broad activity spectrum and are valuable active ingredients for use in pest control, including in particular the control of endoparasites on animals, whilst being well-tolerated by warm-blooded animals, fish and plants,

In the context of the present invention, ectoparasites are understood to be in particular insects, mites and ticks. These include insects of the order: Lepidoptera, Coleoptera, Homoptera, Heteroptera, Diptera, Thysanoptera, Orthoptera, Anoplura, Siphonaptera, Mallophaga, Thysanura, Isoptera, Psocoptera and Hymenoptera. However, the ectoparasites which may be mentioned in particular are those which trouble humans or animals and carry pathogens, for example flies such as Musca domestica, Musca vetustissima, Musca autumnalis, Fannia canicularis, Sarcophaga camaria, Lucilia cuprina, Hypoderrna bovis, Hypoderrna lineatum, Chrysomyia chloropyga, Dermatobia hominis, Cochliomyia hominivorax, Gasterophilus intestinalis, Oestrus ovis, Stomoxys calcitrans, Haematobia irritans and midges (Nematocera), such as Culicidae, Simuliidae, Psychodidae, but also blood-sucking parasites, for example fleas, such as Ctenocephalides felis and Ctenocephalides canis (cat and dog fleas), Xenopsylla cheopis, Pulex irritans, Dermatophilus penetrans, lice, such as Damalina ovis, Pediculus humanis, biting flies and horse-flies (Tabanidae), Haematopota spp. such as Haematopota pluvialis, Tabanidea spp. such as Tabanus nigrovittatus, Chrysopsinae spp. such as Chrysops caecutiens, tsetse flies, such as species of Glossinia, biting insects, particularly cockroaches, such as Blatella germanica, Blatta orientalis, Periplaneta americana, mites, such as Dermanyssus gallinae, Sarcoptes scabiei, Psoroptes ovis and Psorergates spp. and last but not least ticks. The latter belong to the order Acarina. Known representatives of ticks are, for example, Boophilus, Amblyomma, Anocentor, Dermacentor, Haemaphysalis, Hyalomma, Ixodes, Rhipicentor, Margaropus, Rhipicephalus, Argas, Otobius and Ornithodoros and the like, which preferably infest warm-blooded animals including farm animals, such as cattle, pigs, sheep and goats, poultry such as chickens, turkeys and geese, fur-bearing animals such as mink, foxes, chinchillas, rabbits and the like, as well as domestic animals such as cats and dogs, but also humans.

The compounds I according to the invention are also active against all or individual development stages of animal pests showing normal sensitivity, as well as those showing resistance, such as insects and members of the order Acarina. The insecticidal, ovicidal and/or acaricidal effect of the active substances of the invention can manifest itself directly, i.e. killing the pests either immediately or after some time has elapsed, for example when moulting occurs, or by destroying their eggs, or indirectly, e.g. reducing the number of eggs laid and/or the hatching rate, good efficacy corresponding to a pesticidal rate (mortality) of at least 50 to 60%.

Compounds I can also be used against hygiene pests, especially of the order Diptera of the families Sarcophagidae, Anophilidae and Culicidae; the orders Orthoptera, Dictyoptera (e.g. the family Blattidae) and Hymenoptera (e.g. the family Formicidae).

The compounds of formula I are also effective against plant nematodes of the species Meloidogyne, Heterodera, Pratylenchus, Ditylenchus, Radopholus, Rizoglyphus etc.

In particular, the compounds are effective against helminths, in which the endoparasitic nematodes and trematodes may be the cause of serious diseases of mammals and poultry, e.g. sheep, pigs, goats, cattle, horses, donkeys, dogs, cats, guinea-pigs and exotic birds. Typical nematodes of this indication are: Haemonchus, Trichostrongylus, Ostertagia, Nematodirus, Cooperia, Ascaris, Bunostonum, Oesophagostonum, Charbertia, Trichuris, Strongylus, Trichonema, Dictyocaulus, Capillaria, Heterakis, Toxocara, Ascaridia, Oxyuris, Ancylostoma, Uncinaria, Toxascaris and Parascaris. The trematodes include, in particular, the family of Fasciolideae, especially Fasciola hepatica. The particular advantage of the compounds of formula I is their efficacy against those parasites that are resistant towards active ingredients based on benzimidazole.

Certain pests of the species Nematodirus, Cooperia and Oesophagostonum infest the intestinal tract of the host animal, while others of the species Haemonchus and Ostertagia are parasitic in the stomach and those of the species Dictyocaulus are parasitic in the lung tissue. Parasites of the families Filariidae and Setariidae may be found in the internal cell tissue and in the organs, e.g. the heart, the blood vessels, the lymph vessels and the subcutaneous tissue. A particularly notable parasite is the heartworm of the dog, Dirofilaria immitis. The compounds of formula I are highly effective against these parasites.

The pests which may be controlled by the compounds of formula I also include those from the class of Cestoda (tapeworms), e.g. the families Mesocestoidae, especially of the genus Mesocestoides, in particular M. lineatus; Dilepidide, especially Dipylidium caninum, Joyeuxiella spp., in particular Joyeuxiella pasquali, and Diplopylidium spp., and Taeniidae, especially Taenia pisiformis, Taenia cervi, Taenia ovis, Taneia hydatigena, Taenia multiceps, Taenia taeniaeformis, Taenia serialis, and Echinocuccus spp., most preferably Taneia hydatigena, Taenia ovis, Taenia multiceps, Taenia serialis; Echinocuccus granulosus and Echinococcus granulosus and Echinococcus multilocularis, as well as Multiceps multiceps.

Most particularly, Taenia hydatigena, T. pisiformis, T. ovis, T. taeniaeformis, Multiceps multiceps, Joyeuxiella pasquali, Dipylidium caninum, Mesocestoides spp., Echinococcus granulosus and E. multilocularis are controlled on or in dogs and cats simultaneously with Dirofilaria immitis, Ancylostoma ssp., Toxocara ssp. and/or Trichuris vulpis.

Furthermore, the compounds of formula I are suitable for the control of human pathogenic parasites. Of these, typical representatives that appear in the digestive tract are those of the species Ancylostoma, Necator, Ascaris, Strongyloides, Trichinella, Capillaria, Trichuris and Enterobius. The compounds of the present invention are also effective against parasites of the species Wuchereria, Brugia, Onchocerca and Loa from the family of Filariidae, which appear in the blood, in the tissue and in various organs, and also against Dracunculus and parasites of the species Strongyloides and Trichinella, which infect the gastrointestinal tract in particular.

In addition, the compounds of formula I are also effective against harmful and pathogenic fungi on plants, as well as on humans and animals.

The good pesticidal activity of the compounds of formula I according to the invention corresponds to a mortality rate of at least 50–60% of the pests mentioned. The compounds of formula I are preferably employed in unmodified form or preferably together with the adjuvants conventionally used in the art of formulation and may therefore be processed in a known manner to give, for example, emulsifiable concentrates, directly dilutable solutions, dilute emulsions, soluble powders, granules or microencapsulations in polymeric substances. As with the compositions, the methods of application are selected in accordance with the intended objectives and the prevailing circumstances.

The formulation, i.e. the agents, preparations or compositions containing the active ingredient of formula I, or combinations of these active ingredients with other active ingredients, and optionally a solid or liquid adjuvant, are produced in a manner known per se, for example by intimately mixing and/or grinding the active ingredients with spreading compositions, for example with solvents, solid carriers, and optionally surface-active compounds (surfactants).

The solvents in question may be: alcohols, such as ethanol, propanol or butanol, and glycols and their ethers and esters, such as propylene glycol, dipropylene glycol ether, ethylene glycol, ethylene glycol monomethyl or -ethyl ether, ketones, such as cyclohexanone, isophorone or diacetanol alcohol, strong polar solvents, such as N-methyl-2-pyrrolidone, dimethyl sulfoxide or dimethylformamide, or water, vegetable oils, such as rape, castor, coconut, or soybean oil, and also, if appropriate, silicone oils.

Preferred application forms for usage on warm-blooded animals in the control of helminths include solutions, emulsions, suspensions (drenches), food additives, powders, tablets including effervescent tablets, boli, capsules, micro-capsules and pour-on formulations, whereby the physiological compatibility of the formulation excipients must be taken into consideration.

The binders for tablets and boli may be chemically modified polymeric natural substances that are soluble in water or in alcohol, such as starch, cellulose or protein derivatives (e.g. methyl cellulose, carboxymethyl cellulose, ethylhydroxyethyl cellulose, proteins such as zein, gelatin and the like), as well as synthetic polymers, such as polyvinyl alcohol, polyvinyl pyrrolidone etc. The tablets also contain fillers (e.g. starch, microcrystalline cellulose, sugar, lactose etc.), glidants and disintegrants.

If the anthelminthics are present in the form of feed concentrates, then the carriers used are e.g. performance feeds, feed grain or protein concentrates. Such feed concentrates or compositions may contain, apart from the active ingredients, also additives, vitamins, antibiotics, chemotherapeutics or other pesticides, primarily bacteriostats, fungistats, coccidiostats, or even hormone preparations, substances having anabolic action or substances which promote growth, which affect the quality of meat of animals for slaughter or which are beneficial to the organism in another way. If the compositions or the active ingredients of formula I contained therein are added directly to feed or to the drinking troughs, then the formulated feed or drink contains the active ingredients preferably in a concentration of ca. 0.0005 to 0.02% by weight (5–200 ppm).

The compounds of formula I according to the invention may be used alone or in combination with other biocides. They may be combined with pesticides having the same sphere of activity e.g. to increase activity, or with substances having another sphere of activity e.g. to broaden the range of activity. It can also be sensible to add so-called repellents. Since the compounds of formula I are adulticides, i.e. since they are effective in particular against the adult stage of the target parasites, the addition of pesticides which instead attack the juvenile stages of the parasites may be very advantageous. In this way, the greatest part of those parasites that produce great economic damage will be covered. Moreover, this action will contribute substantially to avoiding the formation of resistance.

Many combinations may also lead to synergistic effects, i.e. the total amount of active ingredient can be reduced, which is desirable from an ecological point of view. Preferred groups of combination partners and especially preferred combination partners are named in the following, whereby combinations may contain one or more of these partners in addition to a compound of formula I.

Suitable partners in the mixture may be biocides, e.g. the insecticides and acaricides with a varying mechanism of activity, which are named in the following and have been known to the person skilled in the art for a long time, e.g. chitin synthesis inhibitors, growth regulators; active ingredients which act as juvenile hormones; active ingredients which act as adulticides; broad-band insecticides, broad-band acaricides and nematicides; and also the well known anthelminthics and insect- and/or acarid-deterring substances, said repellents or detachers.

Non-limitative examples of suitable insecticides and acaricides are:

1. Abamectin 2. AC 303 630 3. Acephat 4. Acrinathrin 5. Alanycarb 6. Aldicarb 7. α-Cypermethrin 8. Alphamethrin 9. Amitraz 10. Avermectin B₁ 11. AZ 60541 12. Azinphos A 13. Azinphos M 14. Azinphos-methyl 15. Azocyclotin 16. Bacillus subtil. toxin 17. Bendiocarb 18. Benfuracarb 19. Bensultap 20. β-Cyfluthrin 21. Bifenthrin 22. BPMC 23. Brofenprox 24. Bromophos A 25. Bufencarb 26. Buprofezin 27. Butocarboxin 28. Butylpyridaben 29. Cadusafos 30. Carbaryl 31. Carbofuran 32. Carbophenthion 33. Cartap 34. Chloethocarb 35. Chlorethoxyfos 36. Chlorfenapyr 37. Chlorfluazuron 38. Chlormephos 39. Chlorpyrifos 40. Cis-Resmethrin 41. Clocythrin 42. Clofentezin 43. Cyanophos 44. Cycloprothrin 45. Cyfluthrin 46. Cyhexatin 47. D 2341 48. Deltamethrin 49. Demeton M 50. Demeton S 51. Demeton-S-methyl 52. Dibutylaminothio 53. Dichlofenthion 54. Dicliphos 55. Diethion 56. Diflubenzuron 57. Dimethoat 58. Dimethylvinphos 59. Dioxathion 60. DPX-MP062 61. Edifenphos 62. Emamectin 63. Endosulfan 64. Esfenvalerat 65. Ethiofencarb 66. Ethion 67. Ethofenprox 68. Ethoprophos 69. Etrimphos 70. Fenamiphos 71. Fenazaquin 72. Fenbutatinoxid 73. Fenitrothion 74. Fenobucarb 75. Fenothiocarb 76. Fenoxycarb 77. Fenpropathrin 78. Fenpyrad 79. Fenpyroximate 80. Fenthion 81. Fenvalerate 82. Fipronil 83. Fluazinam 84. Fluazuron 85. Flucycloxuron 86. Flucythrinat 87. Flufenoxuron 88. Flufenprox 89. Fonophos 90. Formothion 91. Fosthiazat 92. Fubfenprox 93. HCH 94. Heptenophos 95. Hexaflumuron 96. Hexythiazox 97. Hydroprene 98. Imidacloprid 99. insect-active fungi 100. insect-active nematodes 101. insect-active viruses 102. Iprobenfos 103. Isofenphos 104. Isoprocarb 105. Isoxathion 106. Ivermectin 107. λ-Cyhalothrin 108. Lufenuron 109. Malathion 110. Mecarbam 111. Mesulfenphos 112. Metaldehyd 113. Methamidophos 114. Methiocarb 115. Methomyl 116. Methoprene 117. Metolcarb 118. Mevinphos 119. Milbemectin 120. Moxidectin 121. Naled 122. NC 184 123. NI-25, Acetamiprid 124. Nitenpyram 125. Omethoat 126. Oxamyl 127. Oxydemethon M 128. Oxydeprofos 129. Parathion 130. Parathion-methyl 131. Permethrin 132. Phenthoat 133. Phorat 134. Phosalone 135. Phosmet 136. Phoxim 137. Pirimicarb 138. Pirimiphos A 139. Pirimiphos M 140. Promecarb 141. Propaphos 142. Propoxur 143. Prothiofos 144. Prothoat 145. Pyrachlophos 146. Pyradaphenthion 147. Pyresmethrin 148. Pyrethrum 149. Pyridaben 150. Pyrimidifen 151. Pyriproxyfen 152. RH 5992 153. RH-2485 154. Salithion 155. Sebufos 156. Silafluofen 157. Spinosad 158. Sulfotep 159. Sulprofos 160. Tebufenozide 161. Tebufenpyrad 162. Tebupirimphos 163. Teflubenzuron 164. Tefluthrin 165. Temephos 166. Terbam 167. Terbufos 168. Tetrachlorvinphos 169. Thiafenox 170. Thiodicarb 171. Thiofanox 172. Thionazin 173. Thuringiensin 174. Tralomethrin 175. Triarthen 176. Triazamate 177. Triazophos 178. Triazuron 179. Trichlorfon 180. Triflumuron 181. Trimethacarb 182. Vamidothion 183. XMC (3,5,-Xylyl- methylcarbamate) 184. Xylylcarb 185. YI 5301/5302 186. ζ-Cypermethrin 187. Zetamethrin

Non-limitative examples of suitable anthelminthics are named in the following, a few representatives have insecticidal and acaricidal activity in addition to the anthelminthic activity, and are partly already in the above list.

-   (A1)     Praziquantel=2–Cyclohexylcarbonyl-4-oxo-1,2,3,6,7,11b-hexahydro-4H-pyrazino[2,1-α]isoquinoline -   (A2)     Closantel=3,5-diiodo-N-[5-chloro-2-methyl-4-(α-cyano-4-chlorobenzyl)phenyl]-salicylamide -   (A3)     Triclabendazole=5-chloro-6-(2,3-dichlorophenoxy)-2-methylthio-1H-benzimidazole -   (A4)     Levamisol=L-(−)-2,3,5,6-tetrahydro-6-phenylimidazo[2,1b]thiazole -   (A5) Mebendazole=(5-benzoyl-1H-benzimidazol-2-yl)carbaminic acid     methylester -   (A6) Omphalotin=a macrocyclic fermentation product of the fungus     Omphalotus olearius described in WO 97/20857 -   (A7) Abamectin=avermectin B1 -   (A8) Ivermectin=22,23-dihydroavermectin B1 -   (A9)     Moxidectin=5-O-demethyl-28-deoxy-25-(1,3-dimethyl-1-butenyl)-6,28-epoxy-23-(methoxyimino)-milbemycin     B -   (A10)     Doramectin=25–Cyclohexyl-5-O-emethyl-25-de(1-methylpropyl)-avermectin     A1a -   (A11) Milbemectin=mixture of milbemycin A3 and milbemycin A4 -   (A12) Milbemvcinoxim=5-oxime of milbemectin

Non-limitative examples of suitable repellents and detachers are:

-   (R1) DEET (N, N-diethyl-m-toluamide) -   (R2) KBR 3023 N-butyl-2-oxycarbonyl-(2-hydroxy)-piperidine -   (R3)     Cvmiazole=N,-2,3-dihydro-3-methyl-1,3-thiazol-2-ylidene-2,4-xylidene

The said partners in the mixture are best known to specialists in this field. Most are described in various editions of the Pesticide Manual, The British Crop Protection Council, London, and others in the various editions of The Merck Index, Merck & Co., Inc., Rahway, N.J., USA or in patent literature. Therefore, the following listing is restricted to a few places where they may be found by way of example.

-   (I) 2-Methyl-2-(methylthio)propionaldehyde-O-methylcarbamoyloxime     (Aldicarb), from The Pesticide Manual, 11^(th) Ed. (1997), The     British Crop Protection Council, London, page 26; -   (II)     S-(3,4-dihydro-4-oxobenzo[d]-[1,2,3]-triazin-3-ylmethyl)O,O-dimethyl-phosphoro-dithioate     (Azinphos-methyl), from The Pesticide Manual, 11^(th)Ed. (1997), The     British Crop Protection Council, London, page 67; -   (III)     Ethyl-N-[2,3-dihydro-2,2-dimethylbenzofuran-7-yloxycarbonyl-(methyl)aminothio]-N-isopropyl-β-alaninate     (Benfuracarb), from The Pesticide Manual, 11^(th)Ed. (1997), The     British Crop Protection Council, London, page 96; -   (IV)     2-Methylbiphenyl-3-ylmethyl-(Z)-(1RS)-cis-3-(2-chloro-3,3,3-trifluoroprop-1-enyl)-2,2-dimethylcyclopropanecarboxylate     (Bifenthrin), from The Pesticide Manual, 11^(th)Ed. (1997), The     British Crop Protection Council, London, page 118; -   (V) 2-tert-butylimino-3-isopropyl-5-phenyl-1,3,5-thiadiazian-4-one     (Buprofezin), from The Pesticide Manual, 11^(th)Ed. (1997), The     British Crop Protection Council, London, page 157; -   (VI) 2,3-Dihydro-2,2-dimethylbenzofuran-7-yl-methylcarbamate     (Carbofuran), from The Pesticide Manual, 11^(th)Ed. (1997), The     British Crop Protection Council, London, page 186; -   (VII)     2,3-Dihydro-2,2-dimethylbenzofuran-7-yl-(dibutylaminothio)methylcarbamate     (Carbosulfan), from The Pesticide Manual, 11^(th)Ed. (1997), The     British Crop Protection Council, London, page 188; -   (VIII) S,S′-(2-dimethylaminotrimethylene)-bis(thiocarbamate)     (Cartap), from The Pesticide Manual, 11^(th)Ed. (1997), The British     Crop Protection Council, London, page 193; -   (IX)     1-[3,5-Dichloro-4-(3-chloro-5-trifluoromethyl-2-pyridyloxy)phenyl]-3-(2,6-difluoro-benzoyl)-urea     (Chlorfluazuron), from The Pesticide Manual, 11^(th)Ed. (1997), The     British Crop Protection Council, London, page 213; -   (X) O,O-diethyl-O-3,5,6-trichloro-2-pyridyl-phosphorothioate     (Chlorpyrifos), from The Pesticide Manual, 11^(th)Ed. (1997), The     British Crop Protection Council, London, page 235; -   (XI)     (RS)-α-cyano-4-fluoro-3-phenoxybenzyl-(1RS,3RS;1RS,3RS)-3-(2,2-dichlorovinyl)-2,2-di-methylcyclopropanecarboxylate     (Cyfluthrin), from The Pesticide Manual, 11^(th)Ed. (1997), The     British Crop Protection Council, London, page 293; -   (XII) Mixture of     (S)-α-cyano-3-phenoxybenzyl-(Z)-(1R,3R)-3-(2-chloro-3,3,3-trifluoro-propenyl)-2,2-dimethylcyclopropanecarboxylate     and     (R)-α-cyano-3-phenoxybenzyl-(2)-(1R,3R)-3-(2-chloro-3,3,3-trifluoropropenyl)-2,2-dimethylcyclopropanecarboxylate     (Lambda-Cyhalothrin), from The Pesticide Manual, 11^(th)Ed. (1997),     The British Crop Protection Council, London, page 300; -   (XIII) Racemate consisting of     (S)-α-cyano-3-phenoxybenzyl-(Z)-(1R,3R)-3-(2,2-dichlorovinyl)-2,2-dimethylcyclopropanecarboxylate     and     (R)-α-cyano-3-phenoxybenzyl-(1S,3S)-3-(2,2-dichlorovinyl)-2,2-dimethylcyclopropanecarboxylate     (Alpha-cypermethrin), from The Pesticide Manual, 11^(th)Ed. (1997),     The British Crop Protection Council, London, page 308; -   (XIV) a mixture of the stereoisomers of (S)-α-cyano-3-phenoxybenzyl     (1RS,3RS,1RS,3RS)-3-(2,2-dichlorovinyl)-2,2-dimethylcyclopropanecarboxylate     (zeta-Cypermethrin), from The Pesticide Manual, 11^(th)Ed. (1997),     The British Crop Protection Council, London, page 314; -   (XV)     (S)-α-cyano-3-phenoxybenzyl-(1R,3R)-3-(2,2-dibromovinyl)-2,2-dimethylcyclopropanecarboxylate     (Deltamethrin), from The Pesticide Manual, 11^(th)Ed. (1997), The     British Crop Protection Council, London, page 344; -   (XVI) (4-chlorophenyl)-3-(2,6-difluorobenzoyl)urea (Diflubenzuron),     from The Pesticide Manual, 11^(th)Ed. (1997), The British Crop     Protection Council, London, page 395; -   (XVII)     (1,4,5,6,7,7-Hexachloro-8,9,10-trinorborn-5-en-2,3-ylenebismethylene)-sulphite     (Endosulfan), from The Pesticide Manual, 11^(th)Ed. (1997), The     British Crop Protection Council, London, page 459; -   (XVIII) α-ethylthio-o-tolyl-methylcarbamate (Ethiofencarb), from The     Pesticide Manual, 11^(th)Ed. (1997), The British Crop Protection     Council, London, page 479; -   (XIX) O,O-dimethyl-O-4-nitro-m-tolyl-phosphorothioate     (Fenitrothion), from The Pesticide Manual, 11^(th)Ed. (1997), The     British Crop Protection Council, London, page 514; -   (XX) 2-sec-butylphenyl-methylcarbamate (Fenobucarb), from The     Pesticide Manual, 11^(th)Ed. (1997), The British Crop Protection     Council, London, page 516; -   (XXI)     (RS)-α-cyano-3-phenoxybenzyl-(RS)-2-(4-chlorophenyl)-3-methylbutyrate     (Fenvalerate), from The Pesticide Manual, 11^(th)Ed. (1997), The     British Crop Protection Council, London, page 539; -   (XXII)     S-[formyl(methyl)carbamoylmethyl]-O,O-dimethyl-phosphorodithioate     (Formothion), from The Pesticide Manual, 11^(th)Ed. (1997), The     British Crop Protection Council, London, page 625; -   (XXIII) 4-Methylthio-3,5-xylyl-methylcarbamate (Methiocarb), from     The Pesticide Manual, 11^(th)Ed. (1997), The British Crop Protection     Council, London, page 813; -   (XXIV) 7-chlorobicyclo[3.2.0]hepta-2,6-dien-6-yl-dimethylphosphate     (Heptenophos), from The Pesticide Manual, 11^(th)Ed. (1997), The     British Crop Protection Council, London, page 670; -   (XXV) 1-(6-chloro-3-pyridylmethyl)-N-nitroimidazolidin-2-ylidenamine     (Imidacloprid), from The Pesticide Manual, 11^(th)Ed. (1997), The     British Crop Protection Council, London, page 706; -   (XXVI) 2-isopropylphenyl-methylcarbamate (Isoprocarb), from The     Pesticide Manual, 11^(th)Ed. (1997), The British Crop Protection     Council, London, page 729; -   (XXVII) O,S-dimethyl-phosphoramidothioate (Methamidophos), from The     Pesticide Manual, 11^(th)Ed. (1997), The British Crop Protection     Council, London, page 808; -   (XXVIII) S-Methyl-N-(methylcarbamoyloxy)thioacetimidate (Methomyl),     from The Pesticide Manual, 11^(th)Ed. (1997), The British Crop     Protection Council, London, page 815; -   (XXIX) Methyl-3-(dimethoxyphosphinoyloxy)but-2-enoate (Mevinphos),     from The Pesticide Manual, 11^(th)Ed. (1997), The British Crop     Protection Council, London, page 844; -   (XXX) O,O-diethyl-O-4-nitrophenyl-phosphorothioate (Parathion), from     The Pesticide Manual, 11^(th)Ed. (1997), The British Crop Protection     Council, London, page 926; -   (XXXI) O,O-dimethyl-O-4-nitrophenyl-phosphorothioate     (Parathion-methyl), from The Pesticide Manual, 11^(th)Ed. (1997),     The British Crop Protection Council, London, page 928; -   (XXXII) S-6-chloro-2,3-dihydro-2-oxo-1     ,3-benzoxazol-3-ylmethyl-O,O-diethyl-phosphordithioate (Phosalone),     from The Pesticide Manual, 11^(th)Ed. (1997), The British Crop     Protection Council, London, page 963; -   (XXXIII)     2-Dimethylamino-5,6-dimethylpyrimidin-4-yl-dimethylcarbamate     (Pirimicarb), from The Pesticide Manual, 11^(th)Ed. (1997), The     British Crop Protection Council, London, page 985; -   (XXXIV) 2-isopropoxyphenyl-methylcarbamate (Propoxur), from The     Pesticide Manual, 11^(th)Ed. (1997), The British Crop Protection     Council, London, page 1036; -   (XXXV)     1-(3,5-dichloro-2,4-difluorophenyl)-3-(2,6-difluorobenzoyl)urea     (Teflubenzuron), from The Pesticide Manual, 11^(th)Ed. (1997), The     British Crop Protection Council, London, page 1158; -   (XXXVI) S-tert-butylthiomethyl-O,O-dimethyl-phosphorodithioate     (Terbufos), from The Pesticide Manual, 11^(th)Ed. (1997), The     British Crop Protection Council, London, page 1165; -   (XXXVII)     ethyl-(3-tert.-butyl-1-dimethylcarbamoyl-1H-1,2,4-triazol-5-yl-thio)-acetate,     (Triazamate), from The Pesticide Manual, 11^(th)Ed. (1997), The     British Crop Protection Council, London, page 1224; -   (XXXVIII) Abamectin, from The Pesticide Manual, 11^(th)Ed. (1997),     The British Crop Protection Council, London, page 3; -   (XXXIX) 2-sec-butylphenyl-methylcarbamate (Fenobucarb), from The     Pesticide Manual, 11^(th)Ed. (1997), The British Crop Protection     Council, London, page 516; -   (XL) N-tert.-butyl-N-(4-ethylbenzoyl)-3,5-dimethylbenzohydrazide     (Tebufenozide), from The Pesticide Manual, 11^(th)Ed. (1997), The     British Crop Protection Council, London, page 1147; -   (XLI)     (±)-5-amino-1-(2,6-dichloro-α,α,α-trifluoro-p-tolyl)-4-trifluoromethyl-sulphinylpyrazol-3-carbonitrile     (Fipronil), from The Pesticide Manual, 11^(th)Ed. (1997), The     British Crop Protection Council, London, page 545; -   (XLII) (RS)-α-cyano-4-fluoro-3-phenoxybenzyl(1RS,3RS;     1RS,3RS)-3-(2,2-dichloro-vinyl)-2,2-dimethylcyclopropanecarboxylate     (beta-Cyfluthrin), from The Pesticide Manual, 11^(th)Ed. (1997), The     British Crop Protection Council, London, page 295; -   (XLIII)     (4-ethoxyphenyl)-[3-(4-fluoro-3-phenoxyphenyl)propyl](dimethyl)silane     (Silafluofen), from The Pesticide Manual, 11^(th)Ed. (1997), The     British Crop Protection Council, London, page 1105; -   (XLIV) tert.-butyl     (E)-α-(1,3-dimethyl-5-phenoxypyrazol-4-yl-methylenamino-oxy)-p-toluate     (Fenpyroximate), from The Pesticide Manual, 11^(th)Ed. (1997), The     British Crop Protection Council, London, page 530; -   (XLV)     2-tert.-butyl-5-(4-tert.-butylbenzylthio)-4-chloropyridazin-3(2H)-one     (Pyridaben), from The Pesticide Manual, 11^(th)Ed. (1997), The     British Crop Protection Council, London, page 1161; -   (XLVI) 4-[[4-(1,1-dimethylphenyl)phenyl]ethoxy]-quinazoline     (Fenazaquin), from The Pesticide Manual, 11^(th)Ed. (1997), The     British Crop Protection Council, London, page 507; -   (XLVII) 4-phenoxyphenyl-(RS)-2-(pyridyloxy)propyl-ether     (Pyriproxyfen), from The Pesticide Manual, 11^(th)Ed. (1997), The     British Crop Protection Council, London, page 1073; -   (XLVIII)     5-chloro-N-{2-[4-(2-ethoxyethyl)-2,3-dimethylphenoxy]ethyl}-6-ethylpyrimidine-4-amine     (Pyrimidifen), from The Pesticide Manual, 11^(th)Ed. (1997), The     British Crop Protection Council, London, page 1070; -   (XLIX)     (E)-N-(6-chloro-3-pyridylmethyl)-N-ethyl-N-methyl-2-nitrovinylidenediamine     (Nitenpyram), from The Pesticide Manual, 11^(th)Ed. (1997), The     British Crop Protection Council, London, page 880; -   (L)     (E)-N¹-[(6-chloro-3-pyridyl)methyl]-N²–Cyano-N¹-methylacetamidine     (NI-25, Acetamiprid), from The Pesticide Manual, 11^(th)Ed. (1997),     The British Crop Protection Council, London, page 9; -   (LI) Avermectin B₁, from The Pesticide Manual, 11^(th)Ed. (1997),     The British Crop Protection Council, London, page 3; -   (LII) an insect-active extract from a plant, especially     (2R,6aS,12aS)-1,2,6,6a,12,12a-hexhydro-2-isopropenyl-8,9-dimethoxy-chromeno[3,4-b]furo[2,3-h]chromen-6-one     (Rotenone), from The Pesticide Manual, 11^(th)Ed. (1997), The     British Crop Protection Council, London, page 1097; and an extract     from Azadirachta indica, especially azadirachtin, from The Pesticide     Manual, 11^(th)Ed. (1997), The British Crop Protection Council,     London, page 59; and -   (LIII) a preparation which contains insect-active nematodes,     preferably Heterorhabditis bacteriophora and Heterorhabditis     megidis, from The Pesticide Manual, 11^(th)Ed. (1997), The British     Crop Protection Council, London, page 671; Steinernema feltiae, from     The Pesticide Manual, 11^(th)Ed. (1997), The British Crop Protection     Council, London, page 1115 and Steinemema scapterisci, from The     Pesticide Manual, 11^(th)Ed. (1997), The British Crop Protection     Council, London, page 1116; -   (LIV) a preparation obtainable from Bacillus subtilis, from The     Pesticide Manual, 11^(th)Ed. (1997), The British Crop Protection     Council, London, page 72; or from a strain of Bacillus thuringiensis     with the exception of compounds isolated from GC91 or from     NCTC11821; The Pesticide Manual, 11^(th)Ed. (1997), The British Crop     Protection Council, London, page 73; -   (LV) a preparation which contains insect-active fungi, preferably     Verticillium lecanii, from The Pesticide Manual, 11^(th)Ed. (1997),     The British Crop Protection Council, London, page 1266; Beauveria     brogniartii, from The Pesticide Manual, 11^(th)Ed. (1997), The     British Crop Protection Council, London, page 85 and Beauveria     bassiana, from The Pesticide Manual, 11^(th)Ed. (1997), The British     Crop Protection Council, London, page 83; -   (LVI) a preparation which contains insect-active viruses, preferably     Neodipridon Sertifer NPV, from The Pesticide Manual, 11^(th)Ed.     (1997), The British Crop Protection Council, London, page 1342;     Mamestra brassicae NPV, from The Pesticide Manual, 11^(th)Ed.     (1997), The British Crop Protection Council, London, page 759 and     Cydia pomonella granulosis virus, from The Pesticide Manual,     11^(th)Ed. (1997), The British Crop Protection Council, London, page     291; -   (CLXXXI)     7-chloro-2,3,4a,5-tetrahydro-2-[methoxycarbonyl(4-trifluoromethoxyphenyl)-carbamoyl]indol[1,2e]oxazoline-4a-carboxylate     (DPX-MP062, Indoxycarb), from The Pesticide Manual, 11^(th)Ed.     (1997), The British Crop Protection Council, London, page 453; -   (CLXXXII)     N-tert.-butyl-N′-(3,5-dimethylbenzoyl)-3-methoxy-2-methylbenzohydrazide     (RH-2485, Methoxyfenozide), from The Pesticide Manual, 11^(th)Ed.     (1997), The British Crop Protection Council, London, page 1094; and -   (CLXXXIII) (N′-[4-methoxy-biphenyl-3-yl]-hydrazinecarboxylic acid     isopropylester (D 2341), from Brighton Crop Protection Conference,     1996, 487-493; -   (R2) Book of Abstracts, 212th ACS National Meeting Orlando, Fla.,     Aug. 25-29 (1996), AGRO-020. Publisher: American Chemical Society,     Washington, D.C. CONEN: 63BFAF.

As a consequence of the above details, a further essential aspect of the present invention relates to combination preparations for the control of parasites on warm-blooded animals, characterised in that they contain, in addition to a compound of formula I, at least one further active ingredient having the same or different sphere of activity and at least one physiologically acceptable carrier. The present invention is not restricted to two-fold combinations.

As a rule, the anthelminthic compositions according to the invention contain 0.1 to 99% by weight, especially 0.1 to 95% by weight of active ingredient of formula I, Ia or mixtures thereof, 99.9 to 1% by weight, especially 99.8 to 5% by weight of a solid or liquid admixture, including O to 25% by weight, especially 0.1 to 25% by weight of a surfactant.

Application of the compositions according to the invention to the animals to be treated may take place topically, perorally, parenterally or subcutaneously, the composition being present in the form of solutions, emulsions, suspensions, (drenches), powders, tablets, boli, capsules and pour-on formulations.

The pour-on or spot-on method consists in applying the compound of formula I to a specific location of the skin or coat, advantageously to the neck or backbone of the animal. This takes place e.g. by applying a swab or spray of the pour-on or spot-on formulation to a relatively small area of the coat, from where the active substance is dispersed almost automatically over wide areas of the fur owing to the spreading nature of the components in the formulation and assisted by the animal's movements.

Pour-on or spot-on formulations suitably contain carriers, which promote rapid dispersement over the skin surface or in the coat of the host animal, and are generally regarded as spreading oils. Suitable carriers are e.g. oily solutions; alcoholic and isopropanolic solutions such as solutions of 2-octyidodecanol or oleyl alcohol; solutions in esters of monocarboxylic acids, such as isopropyl myristate, isopropyl palmitate, lauric acid oxalate, oleic acid oleyl ester, oleic acid decyl ester, hexyl laurate, oleyl oleate, decyl oleate, capric acid esters of saturated fat alcohols of chain length C₁₂–C₁₈; solutions of esters of dicarboxylic acids, such as dibutyl phthalate, diisopropyl isophthalate, adipic acid diisopropyl ester, di-n-butyl adipate or also solutions of esters of aliphatic acids, e.g. glycols. It may be advantageous for a dispersing agent to be additionally present, such as one known from the pharmaceutical or cosmetic industry. Examples are 2-pyrrolidone, 2-(N-alkyl)pyrrolidone, acetone, polyethylene glycol and the ethers and esters thereof, propylene glycol or synthetic triglycerides.

The oily solutions include e.g. vegetable oils such as olive oil, groundnut oil, sesame oil, pine oil, linseed oil or castor oil. The vegetable oils may also be present in epoxidised form. Paraffins and silicone oils may also be used.

A pour-on or spot-on formulation generally contains 1 to 20% by weight of a compound of formula I, 0.1 to 50% by weight of dispersing agent and 45 to 98.9% by weight of solvent.

The pour-on or spot-on method is especially advantageous for use on herd animals such as cattle, horses, sheep or pigs, in which it is difficult or time-consuming to treat all the animals orally or by injection. Because of its simplicity, this method can of course also be used for all other animals, including individual domestic animals or pets, and is greatly favoured by the keepers of the animals, as it can often be carried out without the specialist presence of the veterinarian.

Whereas it is preferred to formulate commercial products as concentrates, the end user will normally use dilute formulations.

Such compositions may also contain further additives, such as stabilisers, anti-foaming agents, viscosity regulators, binding agents or tackifiers, as well as other active ingredients, in order to achieve special effects.

Anthelminthic compositions of this type, which are used by the end user, similarly form a constituent of the present invention.

In each of the processes according to the invention for pest control or in each of the pest control compositions according to the invention, the active ingredients of formula I can be used in all of their steric configurations or in mixtures thereof.

The invention also includes a method of prophylactically protecting warm-blooded animals, especially productive livestock, domestic animals and pets, against parasitic helminths, which is characterised in that the active ingredients of formula I or the active ingredient formulations prepared therefrom are administered to the animals as an additive to the feed, or to the drinks or also in solid or liquid form, orally or by injection or parenterally. The invention also includes the compounds of formula I according to the invention for usage in one of the said processes.

The following examples serve merely to illustrate the invention without restricting it, the term active ingredient representing a substance listed in tables.

In particular, preferred formulations are made up as follows:

-   (%=percent by weight)

FORMULATION EXAMPLES

1. Granulate a) b) active ingredient 5% 10% kaolin 94%  — highly dispersed silicic acid 1% — attapulgite — 90%

The active ingredient is dissolved in methylene chloride, sprayed onto the carrier and the solvent subsequently concentrated by evaporation under vacuum. Granulates of this kind can be mixed with the animal feed.

2. Granulate active ingredient 3% polyethylene glycol (mw 200) 3% kaolin 94% (mw = molecular weight)

The finely ground active ingredient is evenly applied in a mixer to the kaolin which has been moistened with polyethylene glycol. In this way, dust-free coated granules are obtained.

3. Tablets or boli I active ingredient 33.00% methylcellulose 0.80% silicic acid, highly dispersed 0.80% corn starch 8.40% II lactose, cryst. 22.50% corn starch 17.00% microcryst. cellulose 16.50% magnesium stearate 1.00%

-   -   I Methyl cellulose is stirred into water. After the material has         swollen, silicic acid is stirred in and the mixture         homogeneously suspended. The active ingredient and the corn         starch are mixed. The aqueous suspension is worked into this         mixture and kneaded to a dough. The resulting mass is granulated         through a 12 M sieve and dried.     -   II All 4 excipients are mixed thoroughly.     -   III The preliminary mixes obtained according to I and II are         mixed and pressed into tablets or boli.

4. Injectables A. Oily vehicle (slow release) 1. active ingredient 0.1–1.0 g groundnut oil ad 100 ml 2. active ingredient 0.1–1.0 g sesame oil ad 100 ml

Preparation: The active ingredient is dissolved in part of the oil whilst stirring and, if required, with gentle heating, then after cooling made up to the desired volume and sterile-filtered through a suitable membrane filter with a pore size of 0.22 mm.

B Water-miscible solvent (average rate of release) active ingredient 0.1–1.0 g 4-hydroxymethyl-1,3-dioxolane (glycerol formal) 40 g 1,2-propanediol ad 100 ml active ingredient 0.1–1.0 g glycerol dimethyl ketal 40 g 1,2-propanediol ad 100 ml

Preparation: The active ingredient is dissolved in part of the solvent whilst stirring, made up to the desired volume and sterile-filtered through a suitable membrane filter with a pore size of 0.22 mm.

C. Aqueous solubilisate (rapid release) 1. active ingredient 0.1–1.0 g polyethoxylated castor oil (40 ethylene oxide units) 10 g 1,2-propanediol 20 g benzyl alcohol 1 g aqua ad inject. ad 100 ml 2. active ingredient 0.1–1.0 g polyethoxylated sorbitan monooleate 8 g (20 ethylene oxide units) 4-hydroxymethyl-1,3-dioxolane (glycerol formal) 20 g benzyl alcohol 1 g aqua ad inject. ad 100 ml

Preparation: The active ingredient is dissolved in the solvents and the surfactant, and made up with water to the desired volume. Sterile filtration through an appropriate membrane filter of 0.22 mm pore size.

5. Pour on A. active ingredient 5 g isopropyl myristate 10 g isopropanol ad 100 ml B active ingredient 2 g hexyl laurate 5 g medium-chained triglyceride 15 g ethanol ad 100 ml C. active ingredient 2 g oleyl oleate 5 g N-methyl-pyrrolidone 40 g isopropanol ad 100 ml

The aqueous systems may also preferably be used for oral and/or intraruminal application.

The compositions may also contain further additives, such as stabilisers, e.g. where appropriate epoxidised vegetable oils (epoxidised coconut oil, rapeseed oil, or soybean oil); antifoams, e.g. silicone oil, preservatives, viscosity regulators, binders, tackifiers, as well as fertilisers or other active ingredients to achieve special effects.

Further biologically active substances or additives, which are neutral towards the compounds of formula I and do not have a harmful effect on the host animal to be treated, as well as mineral salts or vitamins, may also be added to the described compositions.

The following examples serve to illustrate the invention. They do not limit the invention. The letter ‘h’ stands for hour. The starting substances used may be produced by methods described in literature or are commercially available.

PREPARATION EXAMPLES Example 1 3-(2-chlorophenoxy)-2-hydroxy-2-methylpropionitrile

1.02 g of 1-(2-chlorophenoxy)-propan-2-one and 0.71 g of sodium cyanide are dissolved in

a mixture of 6 ml of H₂O and 10 ml of diethylether. Subsequently, 1.2 ml of conc. hydrochloric acid are added dropwise at an internal temperature of 0-5° C. After stirring the reaction mixture for 3 hours at 0-5° C., the organic phase is separated and the aqueous phase is extracted twice with diethylether. The organic phases are combined, dried over sodium sulphate and the solvent removed. In this way, 1.10 g of the title compound are obtained as a colourless oil.

Example 2 4-trifluoromethoxybenzoic acid-2-(2-chlorphenoxy)-1–Cyano-1-methyl-ethyl ester

212 mg of 3-(2-chlorophenoxy)-2-hydroxy-2-methylpropionitrile and 270 mg of 4-trifluoromethoxybenzoic

acid chloride are dissolved in 15 ml of CH₂Cl₂, and at an internal temperature of 0-5° C., 122 mg of triethylamine, dissolved in 5 ml of CH₂Cl₂, are added dropwise. After adding 25 mg of dimethylamino pyridine, the reaction mixture is stirred for 20 h at 0-5° C., subsequently washed with each of 1 N hydrochloric acid, saturated sodium bicarbonate solution and brine, and the organic phase is separated. The organic phase is dried over magnesium sulphate, the solvent removed and the residue chromatographed over silica gel (CH₂Cl₂/cyclohexane: 1:3). In this way, 220 mg of the title compound are obtained as a colourless oil.

Example 3 4-trifluoromethylphenyl)-carbamic acid-2-(2-chlorphenoxy)-1–Cyano-1-methyl-ethylester

254 mg of 3-(2-chlorophenoxy)-2-hydroxy-2-methylpropionitrile and 262 mg of 4-trifluoromethylphenyl

isocyanate are dissolved in 20 ml of CH₂Cl₂, and at room temperature, 142 mg of triethylamine, dissolved in 5 ml of CH₂Cl₂, are added dropwise. The reaction mixture is stirred for 7 h at room temperature, and subsequently washed with each of 1 N hydrochloric acid, saturated sodium bicarbonate solution and brine. The organic phase is dried over magnesium sulphate, the solvent removed and the residue chromatographed over silica gel (ethyl acetate/cyclohexane: 1:1). Following crystallisation from diethylether/hexane, 150 mg of the title compound are obtained as colourless crystals of m.p.: 142-3° C.

The substances named in the following table may also be prepared analogously to the above-described method.

TABLE 1

No. X R₁ R₂ phys. data 1.1 — H H 1.2 — H 2-CH₃ 1.3 — H 3-CH₃ 1.4 — H 4-CH₃ 1.5 — H 2-F 1.6 — H 3-F 1.7 — H 4-F 1.8 — H 2-Cl 1.9 — H 3-Cl 1.10 — H 4-Cl 1.11 — H 2-CF₃ 1.12 — H 3-CF₃ 1.13 — H 4-CF₃ 1.14 — H 2-OCF₃ 1.15 — H 3-OCF₃ 1.16 — H 4-OCF₃ 1.17 — H 2,3-Cl₂ 1.18 — H 2,4-Cl₂ 1.19 — H 2,5-Cl₂ 1.20 — H 2,6-Cl₂ 1.21 — H 3,4-Cl₂ 1.22 — H 3,5-Cl₂ 1.23 — 2-CH₃ H 1.24 — 2-CH₃ 2-CH₃ 1.25 — 2-CH₃ 3-CH₃ 1.26 — 2-CH₃ 4-CH₃ 1.27 — 2-CH₃ 2-F 1.28 — 2-CH₃ 3-F 1.29 — 2-CH₃ 4-F 1.30 — 2-CH₃ 2-Cl 1.31 — 2-CH₃ 3-Cl 1.32 — 2-CH₃ 4-Cl 1.33 — 2-CH₃ 2-CF₃ 1.34 — 2-CH₃ 3-CF₃ 1.35 — 2-CH₃ 4-CF₃ 1.36 — 2-CH₃ 2-OCF₃ 1.37 — 2-CH₃ 3-OCF₃ 1.38 — 2-CH₃ 4-OCF₃ 1.39 — 2-CH₃ 2,3-Cl₂ 1.40 — 2-CH₃ 2,4-Cl₂ 1.41 — 2-CH₃ 2,5-Cl₂ 1.42 — 2-CH₃ 2,6-Cl₂ 1.43 — 2-CH₃ 3,4-Cl₂ 1.44 — 2-CH₃ 3,5-Cl₂ 1.45 — 3-CH₃ H 1.46 — 3-CH₃ 2-CH₃ 1.47 — 3-CH₃ 3-CH₃ 1.48 — 3-CH₃ 4-CH₃ 1.49 — 3-CH₃ 2-F 1.50 — 3-CH₃ 3-F 1.51 — 3-CH₃ 4-F 1.52 — 3-CH₃ 2-Cl 1.53 — 3-CH₃ 3-Cl 1.54 — 3-CH₃ 4-Cl 1.55 — 3-CH₃ 2-CF₃ 1.56 — 3-CH₃ 3-CF₃ 1.57 — 3-CH₃ 4-CF₃ 1.58 — 3-CH₃ 2-OCF₃ 1.59 — 3-CH₃ 3-OCF₃ 1.60 — 3-CH₃ 4-OCF₃ 1.61 — 3-CH₃ 2,3-Cl₂ 1.62 — 3-CH₃ 2,4-Cl₂ 1.63 — 3-CH₃ 2,5-Cl₂ 1.64 — 3-CH₃ 2,6-Cl₂ 1.65 — 3-CH₃ 3,4-Cl₂ 1.66 — 3-CH₃ 3,5-Cl₂ 1.67 — 4-CH₃ H 1.68 — 4-CH₃ 2-CH₃ 1.69 — 4-CH₃ 3-CH₃ 1.70 — 4-CH₃ 4-CH₃ 1.71 — 4-CH₃ 2-F 1.72 — 4-CH₃ 3-F 1.73 — 4-CH₃ 4-F 1.74 — 4-CH₃ 2-Cl 1.75 — 4-CH₃ 3-Cl 1.76 — 4-CH₃ 4-Cl 1.77 — 4-CH₃ 2-CF₃ 1.78 — 4-CH₃ 3-CF₃ 1.79 — 4-CH₃ 4-CF₃ 1.80 — 4-CH₃ 2-OCF₃ 1.81 — 4-CH₃ 3-OCF₃ 1.82 — 4-CH₃ 4-OCF₃ 1.83 — 4-CH₃ 2,3-Cl₂ 1.84 — 4-CH₃ 2,4-Cl₂ 1.85 — 4-CH₃ 2,5-Cl₂ 1.86 — 4-CH₃ 2,6-Cl₂ 1.87 — 4-CH₃ 3,4-Cl₂ 1.88 — 4-CH₃ 3,5-Cl₂ 1.89 — 2-F H 1.90 — 2-F 2-CH₃ 1.91 — 2-F 3-CH₃ 1.92 — 2-F 4-CH₃ 1.93 — 2-F 2-F 1.94 — 2-F 3-F 1.95 — 2-F 4-F 1.96 — 2-F 2-Cl 1.97 — 2-F 3-Cl 1.98 — 2-F 4-Cl 1.99 — 2-F 2-CF₃ 1.100 — 2-F 3-CF₃ 1.101 — 2-F 4-CF₃ 1.102 — 2-F 2-OCF₃ 1.103 — 2-F 3-OCF₃ 1.104 — 2-F 4-OCF₃ 1.105 — 2-F 2,3-Cl₂ 1.106 — 2-F 2,4-Cl₂ 1.107 — 2-F 2,5-Cl₂ 1.108 — 2-F 2,6-Cl₂ 1.109 — 2-F 3,4-Cl₂ 1.110 — 2-F 3,5-Cl₂ 1.111 — 3-F H 1.112 — 3-F 2-CH₃ 1.113 — 3-F 3-CH₃ 1.114 — 3-F 4-CH₃ 1.115 — 3-F 2-F 1.116 — 3-F 3-F 1.117 — 3-F 4-F 1.118 — 3-F 2-Cl 1.119 — 3-F 3-Cl 1.120 — 3-F 4-Cl 1.121 — 3-F 2-CF₃ 1.122 — 3-F 3-CF₃ 1.123 — 3-F 4-CF₃ 1.124 — 3-F 2-OCF₃ 1.125 — 3-F 3-OCF₃ 1.126 — 3-F 4-OCF₃ 1.127 — 3-F 2,3-Cl₂ 1.128 — 3-F 2,4-Cl₂ 1.129 — 3-F 2,5-Cl₂ 1.130 — 3-F 2,6-Cl₂ 1.131 — 3-F 3,4-Cl₂ 1.132 — 3-F 3,5-Cl₂ 1.133 — 4-F H 1.134 — 4-F 2-CH₃ 1.135 — 4-F 3-CH₃ 1.136 — 4-F 4-CH₃ 1.137 — 4-F 2-F 1.138 — 4-F 3-F 1.139 — 4-F 4-F 1.140 — 4-F 2-Cl 1.141 — 4-F 3-Cl 1.142 — 4-F 4-Cl 1.143 — 4-F 2-CF₃ 1.144 — 4-F 3-CF₃ 1.145 — 4-F 4-CF₃ 1.146 — 4-F 2-OCF₃ 1.147 — 4-F 3-OCF₃ 1.148 — 4-F 4-OCF₃ 1.149 — 4-F 2,3-Cl₂ 1.150 — 4-F 2,4-Cl₂ 1.151 — 4-F 2,5-Cl₂ 1.152 — 4-F 2,6-Cl₂ 1.153 — 4-F 3,4-Cl₂ 1.154 — 4-F 3,5-Cl₂ 1.155 — 2-Cl H 1.156 — 2-Cl 2-CH₃ 1.157 — 2-Cl 3-CH₃ 1.158 — 2-Cl 4-CH₃ 1.159 — 2-Cl 2-F 1.160 — 2-Cl 3-F 1.161 — 2-Cl 4-F 1.162 — 2-Cl 2-Cl 1.163 — 2-Cl 3-Cl 1.164 — 2-Cl 4-Cl 1.165 — 2-Cl 2-CF₃ 1.166 — 2-Cl 3-CF₃ 1.167 — 2-Cl 4-CF₃ oil 1.168 — 2-Cl 2-OCF₃ 1.169 — 2-Cl 3-OCF₃ 1.170 — 2-Cl 4-OCF₃ oil 1.171 — 2-Cl 2,3-Cl₂ 1.172 — 2-Cl 2,4-Cl₂ 1.173 — 2-Cl 2,5-Cl₂ 1.174 — 2-Cl 2,6-Cl₂ 1.175 — 2-Cl 3,4-Cl₂ 1.176 — 2-Cl 3,5-Cl₂ 1.177 — 3-Cl H 1.178 — 3-Cl 2-CH₃ 1.179 — 3-Cl 3-CH₃ 1.180 — 3-Cl 4-CH₃ 1.181 — 3-Cl 2-F 1.182 — 3-Cl 3-F 1.183 — 3-Cl 4-F 1.184 — 3-Cl 2-Cl 1.185 — 3-Cl 3-Cl 1.186 — 3-Cl 4-Cl 1.187 — 3-Cl 2-CF₃ 1.188 — 3-Cl 3-CF₃ 1.189 — 3-Cl 4-CF₃ 1.190 — 3-Cl 2-OCF₃ 1.191 — 3-Cl 3-OCF₃ 1.192 — 3-Cl 4-OCF₃ 1.193 — 3-Cl 2,3-Cl₂ 1.194 — 3-Cl 2,4-Cl₂ 1.195 — 3-Cl 2,5-Cl₂ 1.196 — 3-Cl 2,6-Cl₂ 1.197 — 3-Cl 3,4-Cl₂ 1.198 — 3-Cl 3,5-Cl₂ 1.199 — 4-Cl H 1.200 — 4-Cl 2-CH₃ 1.201 — 4-Cl 3-CH₃ 1.202 — 4-Cl 4-CH₃ 1.203 — 4-Cl 2-F 1.204 — 4-Cl 3-F 1.205 — 4-Cl 4-F 1.206 — 4-Cl 2-Cl 1.207 — 4-Cl 3-Cl 1.208 — 4-Cl 4-Cl 1.209 — 4-Cl 2-CF₃ 1.210 — 4-Cl 3-CF₃ 1.211 — 4-Cl 4-CF₃ 1.212 — 4-Cl 2-OCF₃ 1.213 — 4-Cl 3-OCF₃ 1.214 — 4-Cl 4-OCF₃ 1.215 — 4-Cl 2,3-Cl₂ 1.216 — 4-Cl 2,4-Cl₂ 1.217 — 4-Cl 2,5-Cl₂ 1.218 — 4-Cl 2,6-Cl₂ 1.219 — 4-Cl 3,4-Cl₂ 1.220 — 4-Cl 3,5-Cl₂ 1.221 — 2-CF₃ H 1.222 — 2-CF₃ 2-CH₃ 1.223 — 2-CF₃ 3-CH₃ 1.224 — 2-CF₃ 4-CH₃ 1.225 — 2-CF₃ 2-F 1.226 — 2-CF₃ 3-F 1.227 — 2-CF₃ 4-F 1.228 — 2-CF₃ 2-Cl 1.229 — 2-CF₃ 3-Cl 1.230 — 2-CF₃ 4-Cl 1.231 — 2-CF₃ 2-CF₃ 1.232 — 2-CF₃ 3-CF₃ 1.233 — 2-CF₃ 4-CF₃ oil 1.234 — 2-CF₃ 2-OCF₃ 1.235 — 2-CF₃ 3-OCF₃ 1.236 — 2-CF₃ 4-OCF₃ m.p. 66–8° 1.237 — 2-CF₃ 2,3-Cl₂ 1.238 — 2-CF₃ 2,4-Cl₂ 1.239 — 2-CF₃ 2,5-Cl₂ 1.240 — 2-CF₃ 2,6-Cl₂ 1.241 — 2-CF₃ 3,4-Cl₂ 1.242 — 2-CF₃ 3,5-Cl₂ 1.243 — 3-CF₃ H 1.244 — 3-CF₃ 2-CH₃ 1.245 — 3-CF₃ 3-CH₃ 1.246 — 3-CF₃ 4-CH₃ 1.247 — 3-CF₃ 2-F 1.248 — 3-CF₃ 3-F 1.249 — 3-CF₃ 4-F 1.250 — 3-CF₃ 2-Cl 1.251 — 3-CF₃ 3-Cl 1.252 — 3-CF₃ 4-Cl 1.253 — 3-CF₃ 2-CF₃ 1.254 — 3-CF₃ 3-CF₃ 1.255 — 3-CF₃ 4-CF₃ 1.256 — 3-CF₃ 2-OCF₃ 1.257 — 3-CF₃ 3-OCF₃ 1.258 — 3-CF₃ 4-OCF₃ 1.259 — 3-CF₃ 2,3-Cl₂ 1.260 — 3-CF₃ 2,4-Cl₂ 1.261 — 3-CF₃ 2,5-Cl₂ 1.262 — 3-CF₃ 2,6-Cl₂ 1.263 — 3-CF₃ 3,4-Cl₂ 1.264 — 3-CF₃ 3,5-Cl₂ 1.265 — 4-CF₃ H 1.266 — 4-CF₃ 2-CH₃ 1.267 — 4-CF₃ 3-CH₃ 1.268 — 4-CF₃ 4-CH₃ 1.269 — 4-CF₃ 2-F 1.270 — 4-CF₃ 3-F 1.271 — 4-CF₃ 4-F 1.272 — 4-CF₃ 2-Cl 1.273 — 4-CF₃ 3-Cl 1.274 — 4-CF₃ 4-Cl 1.275 — 4-CF₃ 2-CF₃ 1.276 — 4-CF₃ 3-CF₃ 1.277 — 4-CF₃ 4-CF₃ 1.278 — 4-CF₃ 2-OCF₃ 1.279 — 4-CF₃ 3-OCF₃ 1.280 — 4-CF₃ 4-OCF₃ 1.281 — 4-CF₃ 2,3-Cl₂ 1.282 — 4-CF₃ 2,4-Cl₂ 1.283 — 4-CF₃ 2,5-Cl₂ 1.284 — 4-CF₃ 2,6-Cl₂ 1.285 — 4-CF₃ 3,4-Cl₂ 1.286 — 4-CF₃ 3,5-Cl₂ 1.287 — 2-OCF₃ H 1.288 — 2-OCF₃ 2-CH₃ 1.289 — 2-OCF₃ 3-CH₃ 1.290 — 2-OCF₃ 4-CH₃ 1.291 — 2-OCF₃ 2-F 1.292 — 2-OCF₃ 3-F 1.293 — 2-OCF₃ 4-F 1.294 — 2-OCF₃ 2-Cl 1.295 — 2-OCF₃ 3-Cl 1.296 — 2-OCF₃ 4-Cl 1.297 — 2-OCF₃ 2-CF₃ 1.298 — 2-OCF₃ 3-CF₃ 1.299 — 2-OCF₃ 4-CF₃ 1.300 — 2-OCF₃ 2-OCF₃ 1.301 — 2-OCF₃ 3-OCF₃ 1.302 — 2-OCF₃ 4-OCF₃ 1.303 — 2-OCF₃ 2,3-Cl₂ 1.304 — 2-OCF₃ 2,4-Cl₂ 1.305 — 2-OCF₃ 2,5-Cl₂ 1.306 — 2-OCF₃ 2,6-Cl₂ 1.307 — 2-OCF₃ 3,4-Cl₂ 1.308 — 2-OCF₃ 3,5-Cl₂ 1.309 — 3-OCF₃ H 1.310 — 3-OCF₃ 2-CH₃ 1.311 — 3-OCF₃ 3-CH₃ 1.312 — 3-OCF₃ 4-CH₃ 1.313 — 3-OCF₃ 2-F 1.314 — 3-OCF₃ 3-F 1.315 — 3-OCF₃ 4-F 1.316 — 3-OCF₃ 2-Cl 1.317 — 3-OCF₃ 3-Cl 1.318 — 3-OCF₃ 4-Cl 1.319 — 3-OCF₃ 2-CF₃ 1.320 — 3-OCF₃ 3-CF₃ 1.321 — 3-OCF₃ 4-CF₃ 1.322 — 3-OCF₃ 2-OCF₃ 1.323 — 3-OCF₃ 3-OCF₃ 1.324 — 3-OCF₃ 4-OCF₃ 1.325 — 3-OCF₃ 2,3-Cl₂ 1.326 — 3-OCF₃ 2,4-Cl₂ 1.327 — 3-OCF₃ 2,5-Cl₂ 1.328 — 3-OCF₃ 2,6-Cl₂ 1.329 — 3-OCF₃ 3,4-Cl₂ 1.330 — 3-OCF₃ 3,5-Cl₂ 1.331 — 4-OCF₃ H 1.332 — 4-OCF₃ 2-CH₃ 1.333 — 4-OCF₃ 3-CH₃ 1.334 — 4-OCF₃ 4-CH₃ 1.335 — 4-OCF₃ 2-F 1.336 — 4-OCF₃ 3-F 1.337 — 4-OCF₃ 4-F 1.338 — 4-OCF₃ 2-Cl 1.339 — 4-OCF₃ 3-Cl 1.340 — 4-OCF₃ 4-Cl 1.341 — 4-OCF₃ 2-CF₃ 1.342 — 4-OCF₃ 3-CF₃ 1.343 — 4-OCF₃ 4-CF₃ 1.344 — 4-OCF₃ 2-OCF₃ 1.345 — 4-OCF₃ 3-OCF₃ 1.346 — 4-OCF₃ 4-OCF₃ 1.347 — 4-OCF₃ 2,3-Cl₂ 1.348 — 4-OCF₃ 2,4-Cl₂ 1.349 — 4-OCF₃ 2,5-Cl₂ 1.350 — 4-OCF₃ 2,6-Cl₂ 1.351 — 4-OCF₃ 3,4-Cl₂ 1.352 — 4-OCF₃ 3,5-Cl₂ 1.353 — 2,3-Cl₂ H 1.354 — 2,3-Cl₂ 2-CH₃ 1.355 — 2,3-Cl₂ 3-CH₃ 1.356 — 2,3-Cl₂ 4-CH₃ 1.357 — 2,3-Cl₂ 2-F 1.358 — 2,3-Cl₂ 3-F 1.359 — 2,3-Cl₂ 4-F 1.360 — 2,3-Cl₂ 2-Cl 1.361 — 2,3-Cl₂ 3-Cl 1.362 — 2,3-Cl₂ 4-Cl 1.363 — 2,3-Cl₂ 2-CF₃ 1.364 — 2,3-Cl₂ 3-CF₃ 1.365 — 2,3-Cl₂ 4-CF₃ 1.366 — 2,3-Cl₂ 2-OCF₃ 1.367 — 2,3-Cl₂ 3-OCF₃ 1.368 — 2,3-Cl₂ 4-OCF₃ 1.369 — 2,3-Cl₂ 2,3-Cl₂ 1.370 — 2,3-Cl₂ 2,4-Cl₂ 1.371 — 2,3-Cl₂ 2,5-Cl₂ 1.372 — 2,3-Cl₂ 2,6-Cl₂ 1.373 — 2,3-Cl₂ 3,4-Cl₂ 1.374 — 2,3-Cl₂ 3,5-Cl₂ 1.375 — 2,4-Cl₂ H 1.376 — 2,4-Cl₂ 2-CH₃ 1.377 — 2,4-Cl₂ 3-CH₃ 1.378 — 2,4-Cl₂ 4-CH₃ 1.379 — 2,4-Cl₂ 2-F 1.380 — 2,4-Cl₂ 3-F 1.381 — 2,4-Cl₂ 4-F 1.382 — 2,4-Cl₂ 2-Cl 1.383 — 2,4-Cl₂ 3-Cl 1.384 — 2,4-Cl₂ 4-Cl 1.385 — 2,4-Cl₂ 2-CF₃ 1.386 — 2,4-Cl₂ 3-CF₃ 1.387 — 2,4-Cl₂ 4-CF₃ 1.388 — 2,4-Cl₂ 2-OCF₃ 1.389 — 2,4-Cl₂ 3-OCF₃ 1.390 — 2,4-Cl₂ 4-OCF₃ 1.391 — 2,4-Cl₂ 2,3-Cl₂ 1.392 — 2,4-Cl₂ 2,4-Cl₂ 1.393 — 2,4-Cl₂ 2,5-Cl₂ 1.394 — 2,4-Cl₂ 2,6-Cl₂ 1.395 — 2,4-Cl₂ 3,4-Cl₂ 1.396 — 2,4-Cl₂ 3,5-Cl₂ 1.397 — 2,5-Cl₂ H 1.398 — 2,5-Cl₂ 2-CH₃ 1.399 — 2,5-Cl₂ 3-CH₃ 1.400 — 2,5-Cl₂ 4-CH₃ 1.401 — 2,5-Cl₂ 2-F 1.402 — 2,5-Cl₂ 3-F 1.403 — 2,5-Cl₂ 4-F 1.404 — 2,5-Cl₂ 2-Cl 1.405 — 2,5-Cl₂ 3-Cl 1.406 — 2,5-Cl₂ 4-Cl 1.407 — 2,5-Cl₂ 2-CF₃ 1.408 — 2,5-Cl₂ 3-CF₃ 1.409 — 2,5-Cl₂ 4-CF₃ 1.410 — 2,5-Cl₂ 2-OCF₃ 1.411 — 2,5-Cl₂ 3-OCF₃ 1.412 — 2,5-Cl₂ 4-OCF₃ 1.413 — 2,5-Cl₂ 2,3-Cl₂ 1.414 — 2,5-Cl₂ 2,4-Cl₂ 1.415 — 2,5-Cl₂ 2,5-Cl₂ 1.416 — 2,5-Cl₂ 2,6-Cl₂ 1.417 — 2,5-Cl₂ 3,4-Cl₂ 1.418 — 2,5-Cl₂ 3,5-Cl₂ 1.419 — 2,6-Cl₂ H 1.420 — 2,6-Cl₂ 2-CH₃ 1.421 — 2,6-Cl₂ 3-CH₃ 1.422 — 2,6-Cl₂ 4-CH₃ 1.423 — 2,6-Cl₂ 2-F 1.424 — 2,6-Cl₂ 3-F 1.425 — 2,6-Cl₂ 4-F 1.426 — 2,6-Cl₂ 2-Cl 1.427 — 2,6-Cl₂ 3-Cl 1.428 — 2,6-Cl₂ 4-Cl 1.429 — 2,6-Cl₂ 2-CF₃ 1.430 — 2,6-Cl₂ 3-CF₃ 1.431 — 2,6-Cl₂ 4-CF₃ 1.432 — 2,6-Cl₂ 2-OCF₃ 1.433 — 2,6-Cl₂ 3-OCF₃ 1.434 — 2,6-Cl₂ 4-OCF₃ 1.435 — 2,6-Cl₂ 2,3-Cl₂ 1.436 — 2,6-Cl₂ 2,4-Cl₂ 1.437 — 2,6-Cl₂ 2,5-Cl₂ 1.438 — 2,6-Cl₂ 2,6-Cl₂ 1.439 — 2,6-Cl₂ 3,4-Cl₂ 1.440 — 2,6-Cl₂ 3,5-Cl₂ 1.441 — 3,4-Cl₂ H 1.442 — 3,4-Cl₂ 2-CH₃ 1.443 — 3,4-Cl₂ 3-CH₃ 1.444 — 3,4-Cl₂ 4-CH₃ 1.445 — 3,4-Cl₂ 2-F 1.446 — 3,4-Cl₂ 3-F 1.447 — 3,4-Cl₂ 4-F 1.448 — 3,4-Cl₂ 2-Cl 1.449 — 3,4-Cl₂ 3-Cl 1.450 — 3,4-Cl₂ 4-Cl 1.451 — 3,4-Cl₂ 2-CF₃ 1.452 — 3,4-Cl₂ 3-CF₃ 1.453 — 3,4-Cl₂ 4-CF₃ 1.454 — 3,4-Cl₂ 2-OCF₃ 1.455 — 3,4-Cl₂ 3-OCF₃ 1.456 — 3,4-Cl₂ 4-OCF₃ 1.457 — 3,4-Cl₂ 2,3-Cl₂ 1.458 — 3,4-Cl₂ 2,4-Cl₂ 1.459 — 3,4-Cl₂ 2,5-Cl₂ 1.460 — 3,4-Cl₂ 2,6-Cl₂ 1.461 — 3,4-Cl₂ 3,4-Cl₂ 1.462 — 3,4-Cl₂ 3,5-Cl₂ 1.463 — 3,5-Cl₂ H 1.464 — 3,5-Cl₂ 2-CH₃ 1.465 — 3,5-Cl₂ 3-CH₃ 1.466 — 3,5-Cl₂ 4-CH₃ 1.467 — 3,5-Cl₂ 2-F 1.468 — 3,5-Cl₂ 3-F 1.469 — 3,5-Cl₂ 4-F 1.470 — 3,5-Cl₂ 2-Cl 1.471 — 3,5-Cl₂ 3-Cl 1.472 — 3,5-Cl₂ 4-Cl 1.473 — 3,5-Cl₂ 2-CF₃ 1.474 — 3,5-Cl₂ 3-CF₃ 1.475 — 3,5-Cl₂ 4-CF₃ 1.476 — 3,5-Cl₂ 2-OCF₃ 1.477 — 3,5-Cl₂ 3-OCF₃ 1.478 — 3,5-Cl₂ 4-OCF₃ 1.479 — 3,5-Cl₂ 2,3-Cl₂ 1.480 — 3,5-Cl₂ 2,4-Cl₂ 1.481 — 3,5-Cl₂ 2,5-Cl₂ 1.482 — 3,5-Cl₂ 2,6-Cl₂ 1.483 — 3,5-Cl₂ 3,4-Cl₂ 1.484 — 3,5-Cl₂ 3,5-Cl₂ 1.485 NH H H 1.486 NH H 2-CH₃ 1.487 NH H 3-CH₃ 1.488 NH H 4-CH₃ 1.489 NH H 2-F 1.490 NH H 3-F 1.491 NH H 4-F 1.492 NH H 2-Cl 1.493 NH H 3-Cl 1.494 NH H 4-Cl 1.495 NH H 2-CF₃ 1.496 NH H 3-CF₃ 1.497 NH H 4-CF₃ 1.498 NH H 2-OCF₃ 1.499 NH H 3-OCF₃ 1.500 NH H 4-OCF₃ 1.501 NH H 2,3-Cl₂ 1.502 NH H 2,4-Cl₂ 1.503 NH H 2,5-Cl₂ 1.504 NH H 2,6-Cl₂ 1.505 NH H 3,4-Cl₂ 1.506 NH H 3,5-Cl₂ 1.507 NH 2-CH₃ H 1.508 NH 2-CH₃ 2-CH₃ 1.509 NH 2-CH₃ 3-CH₃ 1.510 NH 2-CH₃ 4-CH₃ 1.511 NH 2-CH₃ 2-F 1.512 NH 2-CH₃ 3-F 1.513 NH 2-CH₃ 4-F 1.514 NH 2-CH₃ 2-Cl 1.515 NH 2-CH₃ 3-Cl 1.516 NH 2-CH₃ 4-Cl 1.517 NH 2-CH₃ 2-CF₃ 1.518 NH 2-CH₃ 3-CF₃ 1.519 NH 2-CH₃ 4-CF₃ 1.520 NH 2-CH₃ 2-OCF₃ 1.521 NH 2-CH₃ 3-OCF₃ 1.522 NH 2-CH₃ 4-OCF₃ 1.523 NH 2-CH₃ 2,3-Cl₂ 1.524 NH 2-CH₃ 2,4-Cl₂ 1.525 NH 2-CH₃ 2,5-Cl₂ 1.526 NH 2-CH₃ 2,6-Cl₂ 1.527 NH 2-CH₃ 3,4-Cl₂ 1.528 NH 2-CH₃ 3,5-Cl₂ 1.529 NH 3-CH₃ H 1.530 NH 3-CH₃ 2-CH₃ 1.531 NH 3-CH₃ 3-CH₃ 1.532 NH 3-CH₃ 4-CH₃ 1.533 NH 3-CH₃ 2-F 1.534 NH 3-CH₃ 3-F 1.535 NH 3-CH₃ 4-F 1.536 NH 3-CH₃ 2-Cl 1.537 NH 3-CH₃ 3-Cl 1.538 NH 3-CH₃ 4-Cl 1.539 NH 3-CH₃ 2-CF₃ 1.540 NH 3-CH₃ 3-CF₃ 1.541 NH 3-CH₃ 4-CF₃ 1.542 NH 3-CH₃ 2-OCF₃ 1.543 NH 3-CH₃ 3-OCF₃ 1.544 NH 3-CH₃ 4-OCF₃ 1.545 NH 3-CH₃ 2,3-Cl₂ 1.546 NH 3-CH₃ 2,4-Cl₂ 1.547 NH 3-CH₃ 2,5-Cl₂ 1.548 NH 3-CH₃ 2,6-Cl₂ 1.549 NH 3-CH₃ 3,4-Cl₂ 1.550 NH 3-CH₃ 3,5-Cl₂ 1.551 NH 4-CH₃ H 1.552 NH 4-CH₃ 2-CH₃ 1.553 NH 4-CH₃ 3-CH₃ 1.554 NH 4-CH₃ 4-CH₃ 1.555 NH 4-CH₃ 2-F 1.556 NH 4-CH₃ 3-F 1.557 NH 4-CH₃ 4-F 1.558 NH 4-CH₃ 2-Cl 1.559 NH 4-CH₃ 3-Cl 1.560 NH 4-CH₃ 4-Cl 1.561 NH 4-CH₃ 2-CF₃ 1.562 NH 4-CH₃ 3-CF₃ 1.563 NH 4-CH₃ 4-CF₃ 1.564 NH 4-CH₃ 2-OCF₃ 1.565 NH 4-CH₃ 3-OCF₃ 1.566 NH 4-CH₃ 4-OCF₃ 1.567 NH 4-CH₃ 2,3-Cl₂ 1.568 NH 4-CH₃ 2,4-Cl₂ 1.569 NH 4-CH₃ 2,5-Cl₂ 1.570 NH 4-CH₃ 2,6-Cl₂ 1.571 NH 4-CH₃ 3,4-Cl₂ 1.572 NH 4-CH₃ 3,5-Cl₂ 1.573 NH 2-F H 1.574 NH 2-F 2-CH₃ 1.575 NH 2-F 3-CH₃ 1.576 NH 2-F 4-CH₃ 1.577 NH 2-F 2-F 1.578 NH 2-F 3-F 1.579 NH 2-F 4-F 1.580 NH 2-F 2-Cl 1.581 NH 2-F 3-Cl 1.582 NH 2-F 4-Cl 1.583 NH 2-F 2-CF₃ 1.584 NH 2-F 3-CF₃ 1.585 NH 2-F 4-CF₃ 1.586 NH 2-F 2-OCF₃ 1.587 NH 2-F 3-OCF₃ 1.588 NH 2-F 4-OCF₃ 1.589 NH 2-F 2,3-Cl₂ 1.590 NH 2-F 2,4-Cl₂ 1.591 NH 2-F 2,5-Cl₂ 1.592 NH 2-F 2,6-Cl₂ 1.593 NH 2-F 3,4-Cl₂ 1.594 NH 2-F 3,5-Cl₂ 1.595 NH 3-F H 1.596 NH 3-F 2-CH₃ 1.597 NH 3-F 3-CH₃ 1.598 NH 3-F 4-CH₃ 1.599 NH 3-F 2-F 1.600 NH 3-F 3-F 1.601 NH 3-F 4-F 1.602 NH 3-F 2-Cl 1.603 NH 3-F 3-Cl 1.604 NH 3-F 4-Cl 1.605 NH 3-F 2-CF₃ 1.606 NH 3-F 3-CF₃ 1.607 NH 3-F 4-CF₃ 1.608 NH 3-F 2-OCF₃ 1.609 NH 3-F 3-OCF₃ 1.610 NH 3-F 4-OCF₃ 1.611 NH 3-F 2,3-Cl₂ 1.612 NH 3-F 2,4-Cl₂ 1.613 NH 3-F 2,5-Cl₂ 1.614 NH 3-F 2,6-Cl₂ 1.615 NH 3-F 3,4-Cl₂ 1.616 NH 3-F 3,5-Cl₂ 1.617 NH 4-F H 1.618 NH 4-F 2-CH₃ 1.619 NH 4-F 3-CH₃ 1.620 NH 4-F 4-CH₃ 1.621 NH 4-F 2-F 1.622 NH 4-F 3-F 1.623 NH 4-F 4-F 1.624 NH 4-F 2-Cl 1.625 NH 4-F 3-Cl 1.626 NH 4-F 4-Cl 1.627 NH 4-F 2-CF₃ 1.628 NH 4-F 3-CF₃ 1.629 NH 4-F 4-CF₃ 1.630 NH 4-F 2-OCF₃ 1.631 NH 4-F 3-OCF₃ 1.632 NH 4-F 4-OCF₃ 1.633 NH 4-F 2,3-Cl₂ 1.634 NH 4-F 2,4-Cl₂ 1.635 NH 4-F 2,5-Cl₂ 1.636 NH 4-F 2,6-Cl₂ 1.637 NH 4-F 3,4-Cl₂ 1.638 NH 4-F 3,5-Cl₂ 1.639 NH 2-Cl H 1.640 NH 2-Cl 2-CH₃ 1.641 NH 2-Cl 3-CH₃ 1.642 NH 2-Cl 4-CH₃ 1.643 NH 2-Cl 2-F 1.644 NH 2-Cl 3-F 1.645 NH 2-Cl 4-F 1.646 NH 2-Cl 2-Cl 1.647 NH 2-Cl 3-Cl 1.648 NH 2-Cl 4-Cl 1.649 NH 2-Cl 2-CF₃ 1.650 NH 2-Cl 3-CF₃ 1.651 NH 2-Cl 4-CF₃ m.p. 142–3° 1.652 NH 2-Cl 2-OCF₃ 1.653 NH 2-Cl 3-OCF₃ 1.654 NH 2-Cl 4-OCF₃ 1.655 NH 2-Cl 2,3-Cl₂ 1.656 NH 2-Cl 2,4-Cl₂ 1.657 NH 2-Cl 2,5-Cl₂ 1.658 NH 2-Cl 2,6-Cl₂ 1.659 NH 2-Cl 3,4-Cl₂ 1.660 NH 2-Cl 3,5-Cl₂ 1.661 NH 3-Cl H 1.662 NH 3-Cl 2-CH₃ 1.663 NH 3-Cl 3-CH₃ 1.664 NH 3-Cl 4-CH₃ 1.665 NH 3-Cl 2-F 1.666 NH 3-Cl 3-F 1.667 NH 3-Cl 4-F 1.668 NH 3-Cl 2-Cl 1.669 NH 3-Cl 3-Cl 1.670 NH 3-Cl 4-Cl 1.671 NH 3-Cl 2-CF₃ 1.672 NH 3-Cl 3-CF₃ 1.673 NH 3-Cl 4-CF₃ 1.674 NH 3-Cl 2-OCF₃ 1.675 NH 3-Cl 3-OCF₃ 1.676 NH 3-Cl 4-OCF₃ 1.677 NH 3-Cl 2,3-Cl₂ 1.678 NH 3-Cl 2,4-Cl₂ 1.679 NH 3-Cl 2,5-Cl₂ 1.680 NH 3-Cl 2,6-Cl₂ 1.681 NH 3-Cl 3,4-Cl₂ 1.682 NH 3-Cl 3,5-Cl₂ 1.683 NH 4-Cl H 1.684 NH 4-Cl 2-CH₃ 1.685 NH 4-Cl 3-CH₃ 1.686 NH 4-Cl 4-CH₃ 1.687 NH 4-Cl 2-F 1.688 NH 4-Cl 3-F 1.689 NH 4-Cl 4-F 1.690 NH 4-Cl 2-Cl 1.691 NH 4-Cl 3-Cl 1.692 NH 4-Cl 4-Cl 1.693 NH 4-Cl 2-CF₃ 1.694 NH 4-Cl 3-CF₃ 1.695 NH 4-Cl 4-CF₃ 1.696 NH 4-Cl 2-OCF₃ 1.697 NH 4-Cl 3-OCF₃ 1.698 NH 4-Cl 4-OCF₃ 1.699 NH 4-Cl 2,3-Cl₂ 1.700 NH 4-Cl 2,4-Cl₂ 1.701 NH 4-Cl 2,5-Cl₂ 1.702 NH 4-Cl 2,6-Cl₂ 1.703 NH 4-Cl 3,4-Cl₂ 1.704 NH 4-Cl 3,5-Cl₂ 1.705 NH 2-CF₃ H 1.706 NH 2-CF₃ 2-CH₃ 1.707 NH 2-CF₃ 3-CH₃ 1.708 NH 2-CF₃ 4-CH₃ 1.709 NH 2-CF₃ 2-F 1.710 NH 2-CF₃ 3-F 1.711 NH 2-CF₃ 4-F 1.712 NH 2-CF₃ 2-Cl 1.713 NH 2-CF₃ 3-Cl 1.714 NH 2-CF₃ 4-Cl 1.715 NH 2-CF₃ 2-CF₃ 1.716 NH 2-CF₃ 3-CF₃ 1.717 NH 2-CF₃ 4-CF₃ m.p. 162–3° 1.718 NH 2-CF₃ 2-OCF₃ 1.719 NH 2-CF₃ 3-OCF₃ 1.720 NH 2-CF₃ 4-OCF₃ m.p. 119–20° 1.721 NH 2-CF₃ 2,3-Cl₂ 1.722 NH 2-CF₃ 2,4-Cl₂ 1.723 NH 2-CF₃ 2,5-Cl₂ 1.724 NH 2-CF₃ 2,6-Cl₂ 1.725 NH 2-CF₃ 3,4-Cl₂ 1.726 NH 2-CF₃ 3,5-Cl₂ 1.727 NH 3-CF₃ H 1.728 NH 3-CF₃ 2-CH₃ 1.729 NH 3-CF₃ 3-CH₃ 1.730 NH 3-CF₃ 4-CH₃ 1.731 NH 3-CF₃ 2-F 1.732 NH 3-CF₃ 3-F 1.733 NH 3-CF₃ 4-F 1.734 NH 3-CF₃ 2-Cl 1.735 NH 3-CF₃ 3-Cl 1.736 NH 3-CF₃ 4-Cl 1.737 NH 3-CF₃ 2-CF₃ 1.738 NH 3-CF₃ 3-CF₃ 1.739 NH 3-CF₃ 4-CF₃ 1.740 NH 3-CF₃ 2-OCF₃ 1.741 NH 3-CF₃ 3-OCF₃ 1.742 NH 3-CF₃ 4-OCF₃ 1.743 NH 3-CF₃ 2,3-Cl₂ 1.744 NH 3-CF₃ 2,4-Cl₂ 1.745 NH 3-CF₃ 2,5-Cl₂ 1.746 NH 3-CF₃ 2,6-Cl₂ 1.747 NH 3-CF₃ 3,4-Cl₂ 1.748 NH 3-CF₃ 3,5-Cl₂ 1.749 NH 4-CF₃ H 1.750 NH 4-CF₃ 2-CH₃ 1.751 NH 4-CF₃ 3-CH₃ 1.752 NH 4-CF₃ 4-CH₃ 1.753 NH 4-CF₃ 2-F 1.754 NH 4-CF₃ 3-F 1.755 NH 4-CF₃ 4-F 1.756 NH 4-CF₃ 2-Cl 1.757 NH 4-CF₃ 3-Cl 1.758 NH 4-CF₃ 4-Cl 1.759 NH 4-CF₃ 2-CF₃ 1.760 NH 4-CF₃ 3-CF₃ 1.761 NH 4-CF₃ 4-CF₃ 1.762 NH 4-CF₃ 2-OCF₃ 1.763 NH 4-CF₃ 3-OCF₃ 1.764 NH 4-CF₃ 4-OCF₃ 1.765 NH 4-CF₃ 2,3-Cl₂ 1.766 NH 4-CF₃ 2,4-Cl₂ 1.767 NH 4-CF₃ 2,5-Cl₂ 1.768 NH 4-CF₃ 2,6-Cl₂ 1.769 NH 4-CF₃ 3,4-Cl₂ 1.770 NH 4-CF₃ 3,5-Cl₂ 1.771 NH 2-OCF₃ H 1.772 NH 2-OCF₃ 2-CH₃ 1.773 NH 2-OCF₃ 3-CH₃ 1.774 NH 2-OCF₃ 4-CH₃ 1.775 NH 2-OCF₃ 2-F 1.776 NH 2-OCF₃ 3-F 1.777 NH 2-OCF₃ 4-F 1.778 NH 2-OCF₃ 2-Cl 1.779 NH 2-OCF₃ 3-Cl 1.780 NH 2-OCF₃ 4-Cl 1.781 NH 2-OCF₃ 2-CF₃ 1.782 NH 2-OCF₃ 3-CF₃ 1.783 NH 2-OCF₃ 4-CF₃ 1.784 NH 2-OCF₃ 2-OCF₃ 1.785 NH 2-OCF₃ 3-OCF₃ 1.786 NH 2-OCF₃ 4-OCF₃ 1.787 NH 2-OCF₃ 2,3-Cl₂ 1.788 NH 2-OCF₃ 2,4-Cl₂ 1.789 NH 2-OCF₃ 2,5-Cl₂ 1.790 NH 2-OCF₃ 2,6-Cl₂ 1.791 NH 2-OCF₃ 3,4-Cl₂ 1.792 NH 2-OCF₃ 3,5-Cl₂ 1.793 NH 3-OCF₃ H 1.794 NH 3-OCF₃ 2-CH₃ 1.795 NH 3-OCF₃ 3-CH₃ 1.796 NH 3-OCF₃ 4-CH₃ 1.797 NH 3-OCF₃ 2-F 1.798 NH 3-OCF₃ 3-F 1.799 NH 3-OCF₃ 4-F 1.800 NH 3-OCF₃ 2-Cl 1.801 NH 3-OCF₃ 3-Cl 1.802 NH 3-OCF₃ 4-Cl 1.803 NH 3-OCF₃ 2-CF₃ 1.804 NH 3-OCF₃ 3-CF₃ 1.805 NH 3-OCF₃ 4-CF₃ 1.806 NH 3-OCF₃ 2-OCF₃ 1.807 NH 3-OCF₃ 3-OCF₃ 1.808 NH 3-OCF₃ 4-OCF₃ 1.809 NH 3-OCF₃ 2,3-Cl₂ 1.810 NH 3-OCF₃ 2,4-Cl₂ 1.811 NH 3-OCF₃ 2,5-Cl₂ 1.812 NH 3-OCF₃ 2,6-Cl₂ 1.813 NH 3-OCF₃ 3,4-Cl₂ 1.814 NH 3-OCF₃ 3,5-Cl₂ 1.815 NH 4-OCF₃ H 1.816 NH 4-OCF₃ 2-CH₃ 1.817 NH 4-OCF₃ 3-CH₃ 1.818 NH 4-OCF₃ 4-CH₃ 1.819 NH 4-OCF₃ 2-F 1.820 NH 4-OCF₃ 3-F 1.821 NH 4-OCF₃ 4-F 1.822 NH 4-OCF₃ 2-Cl 1.823 NH 4-OCF₃ 3-Cl 1.824 NH 4-OCF₃ 4-Cl 1.825 NH 4-OCF₃ 2-CF₃ 1.826 NH 4-OCF₃ 3-CF₃ 1.827 NH 4-OCF₃ 4-CF₃ 1.828 NH 4-OCF₃ 2-OCF₃ 1.829 NH 4-OCF₃ 3-OCF₃ 1.830 NH 4-OCF₃ 4-OCF₃ 1.831 NH 4-OCF₃ 2,3-Cl₂ 1.832 NH 4-OCF₃ 2,4-Cl₂ 1.833 NH 4-OCF₃ 2,5-Cl₂ 1.834 NH 4-OCF₃ 2,6-Cl₂ 1.835 NH 4-OCF₃ 3,4-Cl₂ 1.836 NH 4-OCF₃ 3,5-Cl₂ 1.837 NH 2,3-Cl₂ H 1.838 NH 2,3-Cl₂ 2-CH₃ 1.839 NH 2,3-Cl₂ 3-CH₃ 1.840 NH 2,3-Cl₂ 4-CH₃ 1.841 NH 2,3-Cl₂ 2-F 1.842 NH 2,3-Cl₂ 3-F 1.843 NH 2,3-Cl₂ 4-F 1.844 NH 2,3-Cl₂ 2-Cl 1.845 NH 2,3-Cl₂ 3-Cl 1.846 NH 2,3-Cl₂ 4-Cl 1.847 NH 2,3-Cl₂ 2-CF₃ 1.848 NH 2,3-Cl₂ 3-CF₃ 1.849 NH 2,3-Cl₂ 4-CF₃ 1.850 NH 2,3-Cl₂ 2-OCF₃ 1.851 NH 2,3-Cl₂ 3-OCF₃ 1.852 NH 2,3-Cl₂ 4-OCF₃ 1.853 NH 2,3-Cl₂ 2,3-Cl₂ 1.854 NH 2,3-Cl₂ 2,4-Cl₂ 1.855 NH 2,3-Cl₂ 2,5-Cl₂ 1.856 NH 2,3-Cl₂ 2,6-Cl₂ 1.857 NH 2,3-Cl₂ 3,4-Cl₂ 1.858 NH 2,3-Cl₂ 3,5-Cl₂ 1.859 NH 2,4-Cl₂ H 1.860 NH 2,4-Cl₂ 2-CH₃ 1.861 NH 2,4-Cl₂ 3-CH₃ 1.862 NH 2,4-Cl₂ 4-CH₃ 1.863 NH 2,4-Cl₂ 2-F 1.864 NH 2,4-Cl₂ 3-F 1.865 NH 2,4-Cl₂ 4-F 1.866 NH 2,4-Cl₂ 2-Cl 1.867 NH 2,4-Cl₂ 3-Cl 1.868 NH 2,4-Cl₂ 4-Cl 1.869 NH 2,4-Cl₂ 2-CF₃ 1.870 NH 2,4-Cl₂ 3-CF₃ 1.871 NH 2,4-Cl₂ 4-CF₃ 1.872 NH 2,4-Cl₂ 2-OCF₃ 1.873 NH 2,4-Cl₂ 3-OCF₃ 1.874 NH 2,4-Cl₂ 4-OCF₃ 1.875 NH 2,4-Cl₂ 2,3-Cl₂ 1.876 NH 2,4-Cl₂ 2,4-Cl₂ 1.877 NH 2,4-Cl₂ 2,5-Cl₂ 1.878 NH 2,4-Cl₂ 2,6-Cl₂ 1.879 NH 2,4-Cl₂ 3,4-Cl₂ 1.880 NH 2,4-Cl₂ 3,5-Cl₂ 1.881 NH 2,5-Cl₂ H 1.882 NH 2,5-Cl₂ 2-CH₃ 1.883 NH 2,5-Cl₂ 3-CH₃ 1.884 NH 2,5-Cl₂ 4-CH₃ 1.885 NH 2,5-Cl₂ 2-F 1.886 NH 2,5-Cl₂ 3-F 1.887 NH 2,5-Cl₂ 4-F 1.888 NH 2,5-Cl₂ 2-Cl 1.889 NH 2,5-Cl₂ 3-Cl 1.890 NH 2,5-Cl₂ 4-Cl 1.891 NH 2,5-Cl₂ 2-CF₃ 1.892 NH 2,5-Cl₂ 3-CF₃ 1.893 NH 2,5-Cl₂ 4-CF₃ 1.894 NH 2,5-Cl₂ 2-OCF₃ 1.895 NH 2,5-Cl₂ 3-OCF₃ 1.896 NH 2,5-Cl₂ 4-OCF₃ 1.897 NH 2,5-Cl₂ 2,3-Cl₂ 1.898 NH 2,5-Cl₂ 2,4-Cl₂ 1.899 NH 2,5-Cl₂ 2,5-Cl₂ 1.900 NH 2,5-Cl₂ 2,6-Cl₂ 1.901 NH 2,5-Cl₂ 3,4-Cl₂ 1.902 NH 2,5-Cl₂ 3,5-Cl₂ 1.903 NH 2,6-Cl₂ H 1.904 NH 2,6-Cl₂ 2-CH₃ 1.905 NH 2,6-Cl₂ 3-CH₃ 1.906 NH 2,6-Cl₂ 4-CH₃ 1.907 NH 2,6-Cl₂ 2-F 1.908 NH 2,6-Cl₂ 3-F 1.909 NH 2,6-Cl₂ 4-F 1.910 NH 2,6-Cl₂ 2-Cl 1.911 NH 2,6-Cl₂ 3-Cl 1.912 NH 2,6-Cl₂ 4-Cl 1.913 NH 2,6-Cl₂ 2-CF₃ 1.914 NH 2,6-Cl₂ 3-CF₃ 1.915 NH 2,6-Cl₂ 4-CF₃ 1.916 NH 2,6-Cl₂ 2-OCF₃ 1.917 NH 2,6-Cl₂ 3-OCF₃ 1.918 NH 2,6-Cl₂ 4-OCF₃ 1.919 NH 2,6-Cl₂ 2,3-Cl₂ 1.920 NH 2,6-Cl₂ 2,4-Cl₂ 1.921 NH 2,6-Cl₂ 2,5-Cl₂ 1.922 NH 2,6-Cl₂ 2,6-Cl₂ 1.923 NH 2,6-Cl₂ 3,4-Cl₂ 1.924 NH 2,6-Cl₂ 3,5-Cl₂ 1.925 NH 3,4-Cl₂ H 1.926 NH 3,4-Cl₂ 2-CH₃ 1.927 NH 3,4-Cl₂ 3-CH₃ 1.928 NH 3,4-Cl₂ 4-CH₃ 1.929 NH 3,4-Cl₂ 2-F 1.930 NH 3,4-Cl₂ 3-F 1.931 NH 3,4-Cl₂ 4-F 1.932 NH 3,4-Cl₂ 2-Cl 1.933 NH 3,4-Cl₂ 3-Cl 1.934 NH 3,4-Cl₂ 4-Cl 1.935 NH 3,4-Cl₂ 2-CF₃ 1.936 NH 3,4-Cl₂ 3-CF₃ 1.937 NH 3,4-Cl₂ 4-CF₃ 1.938 NH 3,4-Cl₂ 2-OCF₃ 1.939 NH 3,4-Cl₂ 3-OCF₃ 1.940 NH 3,4-Cl₂ 4-OCF₃ 1.941 NH 3,4-Cl₂ 2,3-Cl₂ 1.942 NH 3,4-Cl₂ 2,4-Cl₂ 1.943 NH 3,4-Cl₂ 2,5-Cl₂ 1.944 NH 3,4-Cl₂ 2,6-Cl₂ 1.945 NH 3,4-Cl₂ 3,4-Cl₂ 1.946 NH 3,4-Cl₂ 3,5-Cl₂ 1.947 NH 3,5-Cl₂ H 1.948 NH 3,5-Cl₂ 2-CH₃ 1.949 NH 3,5-Cl₂ 3-CH₃ 1.950 NH 3,5-Cl₂ 4-CH₃ 1.951 NH 3,5-Cl₂ 2-F 1.952 NH 3,5-Cl₂ 3-F 1.953 NH 3,5-Cl₂ 4-F 1.954 NH 3,5-Cl₂ 2-Cl 1.955 NH 3,5-Cl₂ 3-Cl 1.956 NH 3,5-Cl₂ 4-Cl 1.957 NH 3,5-Cl₂ 2-CF₃ 1.958 NH 3,5-Cl₂ 3-CF₃ 1.959 NH 3,5-Cl₂ 4-CF₃ 1.960 NH 3,5-Cl₂ 2-OCF₃ 1.961 NH 3,5-Cl₂ 3-OCF₃ 1.962 NH 3,5-Cl₂ 4-OCF₃ 1.963 NH 3,5-Cl₂ 2,3-Cl₂ 1.964 NH 3,5-Cl₂ 2,4-Cl₂ 1.965 NH 3,5-Cl₂ 2,5-Cl₂ 1.966 NH 3,5-Cl₂ 2,6-Cl₂ 1.967 NH 3,5-Cl₂ 3,4-Cl₂ 1.968 NH 3,5-Cl₂ 3,5-Cl₂

Biological Examples 1. In-Vivo Test on Trichostrongylus colubriformis and Haemonchus contortus on Mongolian gerbils (Meriones unguiculatus) Using Peroral Application

Six to eight week old Mongolian gerbils are infected by artificial feeding with ca. 2000 third instar larvae each of T. colubriformis and H. contortus. 6 days after infection, the gerbils are lightly anaesthetised with N₂O and treated by peroral application with the test compounds, dissolved in a mixture of 2 parts DMSO and 1 part polyethylene glycol (PEG 300), in quantities of 100, 32 and 10–0.1 mg/kg. On day 9 (3 days after treatment), when most of the H. contortus that are still present are late 4th instar larvae and most of the T. colubriformis are immature adults, the gerbils are killed in order to count the worms. The efficacy is calculated as the % reduction of the number of worms in each gerbil, compared with the geometric average of number of worms from 8 infected and untreated gerbils.

In this test, a vast reduction in nematode infestation is achieved with compounds of formula I.

To examine the insecticidal and/or acaricidal activity of the compounds of formula I on animals and plants, the following test methods may be used.

2. Acaricidal Activity on Boophilus microplus (Biarra Strain)

A piece of sticky tape is attached horizontally to a PVC sheet, so that 10 fully engorged female ticks of Boophilus microplus (Biarra strain) can be adhered thereto by their backs, side by side, in a row. Using an injection needle, 1 μl of a liquid is injected into each tick. The liquid is a 1:1 mixture of polyethylene glycol and acetone and it contains, dissolved therein, a certain amount of active ingredient chosen from 1, 0.1 or 0.01 μg per tick. Control animals are given an injection without active ingredient. After treatment, the animals are kept under normal conditions in an insectarium at ca. 28° C. and at 80% relative humidity until oviposition takes place and the larvae have hatched from the eggs of the control animals. The activity of a tested substance is determined by IR₉₀, i.e. an evaluation is made of the dosage of active ingredient at which 9 out of 10 female ticks (=90%) lay eggs that are infertile even after 30 days.

3. In Vitro Efficacy on Engorged Female Boophilus microplus (BIARRA)

4×10 engorged female ticks of the OP-resistant BIARRA strain are adhered to a sticky strip and covered for 1 hour with a cotton-wool ball soaked in an emulsion or suspension of the test compound in concentrations of 500, 125, 31 and 8 ppm respectively. Evaluation takes place 28 days later based on mortality, oviposition and hatched larvae.

An indication of the activity of the test compounds is shown by the number of females that

-   -   die quickly before laying eggs,     -   survive for some time without laying eggs,     -   lay eggs in which no embryos are formed,     -   lay eggs in which embryos form, from which no larvae hatch, and     -   lay eggs in which embryos form, from which larvae normally hatch         within 26 to 27 days.

4. In Vitro Efficacy on Nymphs of Amblyomma hebraeum

About 5 fasting nymphs are placed in a polystyrene test tube containing 2 ml of the test compound in solution, suspension or emulsion.

After immersion for 10 minutes, and shaking for 2×10 seconds on a vortex mixer, the test tubes are blocked up with a tight wad of cotton wool and rotated. As soon as all the liquid has been soaked up by the cotton wool ball, it is pushed half-way into the test tube which is still being rotated, so that most of the liquid is squeezed out of the cotton-wool ball and flows into a Petri dish below.

The test tubes are then kept at room temperature in a room with daylight until evaluated. After 14 days, the test tubes are immersed in a beaker of boiling water. If the ticks begin to move in reaction to the heat, the test substance is inactive at the tested concentration, otherwise the ticks are regarded as dead and the test substances regarded as active at the tested concentration. All substances are tested in a concentration range of 0.1 to 100 ppm.

5. Activity Against Dermanyssus callinae

2 to 3 ml of a solution containing 10 ppm active ingredient, and ca. 200 mites (Dermanyssus gallinae) at different stages of development are added to a glass container which is open at the top. Then the container is closed with a wad of cotton wool, shaken for 10 minutes until the mites are completely wet, and then inverted briefly so that the remaining test solution can be absorbed by the cotton wool. After 3 days, the mortality of the mites is determined by counting the dead individuals and indicated as a percentage.

6. Activity Against Musca domestica

A sugar cube is treated with a solution of the test substance in such a way that the concentration of test substance in the sugar, after drying over night, is 250 ppm. The cube treated in this way is placed on an aluminium dish with wet cotton wool and 10 adult Musca domestica of an OP-resistant strain, covered with a beaker and incubated at 25° C. The mortality rate is determined after 24 hours. 

1. A compound of formula (I)

wherein Ar₁ and Ar₂, independently of one another, signify unsubstituted phenyl or phenyl which is substituted once or many times, whereby the substituents may be independent of one another and are selected from the group consisting of halogen, nitro, cyano, C₁–C₆-alkyl, halo-C₁–C₆-alkyl, C₁–C₆-alkoxy, halo-C₁–C₆-alkoxy, C₂–C₆-alkenyl, halo-C₂–C₆-alkenyl, C₂–C₆-alkinyl, C₃–C₆-cycloalkyl, C₂–C₆-alkenyloxy, halo-C₂–C₆-alkenyloxy, C₁–C₆-alkylthio, halo-C₁–C₆-alkylthio, C₁–C₆-alkylsulfonyloxy, halo-C₁–C₆-alkylsulfonyloxy, C₁–C₆-alkylsulfinyl, halo-C₁–C₆-alkylsulfinyl, C₁–C₆-alkylsulfonyl, halo-C₁–C₆-alkylsulfonyl, C₂₋C₆-alkenylthio, halo-C₂–C₆-alkenylthio, C₂–C₆-alkenylsulfinyl, halo-C₂–C₆-alkenylsulfinyl, C₂–C₆-alkenylsulfonyl, halo-C₂–C₆-alkenylsulfonyl, C₁–C₆-alkylamino, di-C₁–C₆-alkylamino, C₁–C₆-alkylsulfonylamino, halo-C₁–C₆-alkylsulfonylamino, C₁–C₆-alkylcarbonyl, halo-C₁–C₆-alkylcarbonyl, C₁–C₆-alkoxycarbonyl, C₁–C₆-alkylaminocarbonyl, di-C₁–C₆-alkylaminocarbonyl; unsubstituted phenylamino or phenylamino which is substituted once or many times; unsubstituted phenylcarbonyl or phenylcarbonyl which is substituted once or many times; unsubstituted phenyl or phenyl which is substituted once or many times, whereby the substituents may be independent of one another and are selected from the group consisting of halogen, nitro, cyano, C₁–C₆-alkyl, halo-C₁–C₆-alkyl, C₁–C₆-alkoxy, halo-C₁–C₆-alkoxy, C₁–C₆-alkylthio, halo-C₁–C₆-alkylthio, C₁–C₆-alkylsulfinyl, halo-C₁–C₆-alkylsulfinyl, C₁–C₆-alkylsulfonyl and halo-C₁–C₆-alkylsulfonyl; unsubstituted phenoxy or phenoxy which is substituted once or many times, whereby the substituents may be independent of one another and are selected from the group consisting of halogen, nitro, cyano, C₁–C₆-alkyl, halo-C₁–C₆-alkyl, C₁–C₆-alkoxy, halo-C₁–C₆-alkoxy, C₁–C₆-alkylthio, halo-C₁–C₆-alkylthio, C₁–C₆-alkylsulfinyl, halo-C₁–C₆-alkylsulfinyl, C₁–C₆-alkylsulfonyl and halo-C₁–C₆-alkylsulfonyl; unsubstituted phenylacetylenyl or phenylacetylenyl which is substituted once or many times, whereby the substituents may be independent of one another and are selected from the group consisting of halogen, nitro, cyano, C₁–C₆-alkyl, halo-C₁–C₆-alkyl, C₁–C₆-alkoxy, halo-C₁–C₆-alkoxy, C₁–C₆-alkylthio, halo-C₁–C₆-alkylthio, C₁–C₆-alkylsulfinyl, halo-C₁–C₆-alkylsulfinyl, C₁–C₆-alkylsulfonyl and halo-C₁–C₆-alkylsulfonyl; and unsubstituted pyridyloxy or pyridyloxy which is substituted once or many times, whereby the substituents may be independent of one another and are selected from the group consisting of halogen, nitro, cyano, C₁–C₆-alkyl, halo-C₁–C₆-alkyl, C₁–C₆-alkoxy, halo-C₁–C₆-alkoxy, C₁–C₆-alkylthio, halo-C₁–C₆-alkylthio, C₁–C₆-alkylsulfinyl, halo-C₁–C₆-alkylsulfinyl, C₁–C₆-alkylsulfonyl and halo-C₁–C₆-alkylsulfonyl; halo-C₂–C₆-alkenylsulfinyl, C₁–C₆-alkylsulfonyl and halo-C₁–C₆-alkylsulfonyl, R₄, R₅, R₆, R₇ and R₈ are either, independently of one another, hydrogen, halogen, unsubstituted C₁–C₆-alkyl or C₁–C₆-alkyl which is substituted once or many times, unsubstituted C₂–C₆-alkenyl or C₂–C₆-alkenyl which is substituted once or many times, unsubstituted C₂–C₆-alkinyl or C₂–C₆-alkinyl which is substituted once or many times, whereby the substituents may each be independent of one another and are selected from the group consisting of halogen, C₁–C₆-alkoxy and halo-C₁–C₆-alkoxy; C₃–C₆-cycloalkyl, whereby the substituents may be independent of one another and are selected from the group consisting of halogen and C₁–C₆-alkyl; unsubstituted phenyl or phenyl which is substituted once or many times, whereby the substituents may be independent of one another and are selected from the group consisting of halogen, nitro, cyano, C₁–C₆-alkyl, halo-C₁–C₆-alkyl, C₁–C₆-alkoxy, halo-C₁–C₆-alkoxy, C₁–C₆-alkylthio, halo-C₁–C₆-alkylthio, C₁–C₆-alkylsulfinyl, halo-C₁–C₆-alkylsulfinyl, C₁–C₆-alkylsulfonyl, halo-C₁–C₆-alkylsulfonyl, C₁–C₆-alkylamino or di-C₁–C₆-alkylamino; or R₄ and R₅ together signify C₂–C₆-alkylene; W signifies O, S, S(O₂) or N(R₉); R₉ signifies hydrogen or C₁–C₆-alkyl; X signifies O, S or N(R₁₀); R₁₀ signifies hydrogen, C₁–C₆-alkyl, halo-C₁–C₆-alkyl, allyl or C₁–C₆-alkoxymethyl; a signifies 1, 2, 3 or 4; and b signifies 0, 1, 2, 3 or 4, whereby said compound is in free form or salt form.
 2. A compound of formula (I) according to claim 1, wherein Ar₁ and Ar₂, independently of one another, signify unsubstituted phenyl or phenyl which is substituted once or many times, whereby the substituents may be independent of one another and are selected from the group consisting of halogen, nitro, cyano, C₁–C₆-alkyl, halo-C₁–C₆-alkyl, C₁–C₆-alkoxy, halo-C₁–C₆-alkoxy, C₂–C₆-alkenyl, halo-C₂–C₆-alkenyl, C₂–C₆-alkinyl, C₃–C₆-cycloalkyl, C₂–C₆-alkenyloxy, halo-C₂–C₆-alkenyloxy, C₁–C₆-alkylthio, halo-C₁–C₆-alkylthio, C₁–C₆-alkylamino, di-C₁–C₆-alkylamino, C₁–C₆-alkylcarbonyl, halo-C₁–C₆-alkylcarbonyl, C₁–C₆-alkoxycarbonyl, C₁–C₆-alkylaminocarbonyl and di-C₁–C₆-alkylaminocarbonyl.
 3. A compound of formula (I) according to claim 1, wherein Ar₁ and Ar₂, independently of one another, signify phenyl that is either unsubstituted or substituted once or many times, whereby the substituents may be independent of one another and are selected from the group consisting of halogen, C₁–C₆-alkyl, halo-C₁–C₆-alkyl, C₁–C₆-alkoxy, halo-C₁–C₆-alkoxy, C₃–C₆-cycloalkyl, C₁–C₆-alkylthio, halo-C₁–C₆-alkylthio, C₁–C₆-alkylcarbonyl, halo-C₁–C₆-alkylcarbonyl, C₁–C₆-alkoxycarbonyl, C₁–C₆-alkylaminocarbonyl and di-C₁–C₆-alkylaminocarbonyl.
 4. A compound of formula (I) according to claim 1, wherein Ar₁ and Ar₂, independently of one another, signify phenyl that is either unsubstituted or substituted once or many times, whereby the substituents may be independent of one another and are selected from the group consisting of halogen, C₁–C₆-alkyl, halo-C₁–C₆-alkyl, C₁–C₆-alkoxy and halo-C₁–C₆-alkoxy.
 5. A compound of formula (I) according to claim 1, wherein R₄, R₅, R₆, R₇ and R₈ are, independently of one another, hydrogen, halogen, unsubstituted C₁–C₆-alkyl or C₁–C₆-alkyl which is substituted once or many times, unsubstituted C₂–C₆-alkenyl or C₂–C₆-alkenyl which is substituted once or many times, unsubstituted C₂–C₆-alkinyl or C₂–C₆-alkinyl which is substituted once or many times, whereby the substituents may each be independent of one another and are selected from the group consisting of halogen, C₁–C₆-alkoxy and halo-C₁–C₆-alkoxy; unsubstituted C₃–C₆-cycloalkyl or C₃–C₆-cycloalkyl which is substituted once or many times, whereby the substituents may be independent of one another and are selected from the group consisting of halogen and C₁–C₆-alkyl; or unsubstituted phenyl or phenyl which is substituted once or many times, whereby the substituents may be independent of one another and are selected from the group consisting of halogen, nitro, cyano, C₁–C₆-alkyl, halo-C₁–C₆-alkyl, C₁–C₆-alkoxy, halo-C₁–C₆-alkoxy, C₁–C₆-alkylsulfonyl, halo-C₁–C₆-alkylsulfonyl, C₁–C₆-alkylamino or di-C₁–C₆-alkylamino.
 6. A compound of formula (I) according to claim 1, wherein R₄, R₅, R₆, R₇ and R₈ are, independently of one another, hydrogen, halogen, unsubstituted C₁–C₆-alkyl or C₁–C₆-alkyl which is substituted once or many times, unsubstituted C₂–C₆-alkenyl or C₂–C₆-alkenyl which is substituted once or many times, unsubstituted C₂–C₆-alkinyl or C₂–C₆-alkinyl which is substituted once or many times, whereby the substituents may each be independent of one another and are selected from the group consisting of halogen and C₁–C₆-alkoxy; unsubstituted C₃–C₆-cycloalkyl or C₃–C₆-cycloalkyl which is substituted once or many times, whereby the substituents may be independent of one another and are selected from the group consisting of halogen and C₁–C₄-alkyl; or unsubstituted phenyl or phenyl which is substituted once or many times, whereby the substituents may be independent of one another and are selected from the group consisting of halogen, nitro, cyano, C₁–C₆-alkyl, halo-C₁–C₆-alkyl, C₁–C₆-alkoxy or halo-C₁–C₆-alkoxy.
 7. A compound of formula (I) according to claim 1, wherein R₄, R₅, R₆, R₇ and R₈ are, independently of one another, hydrogen, halogen, C₁–C₄-alkyl or halo-C₁–C₄-alkyl.
 8. A compound of formula (I) according to claim 1, wherein W is O, S or N(R₉).
 9. A compound of formula (I) according to claim 1, wherein W is O or S.
 10. A compound of formula (I) according to claim 1, wherein W is O.
 11. A compound of formula (I) according to claim 1, wherein R₉ signifies hydrogen or C₁-R₄-alkyl.
 12. A compound of formula (I) according to claim 1, wherein R₉ signifies hydrogen or C₁–C₂-alkyl.
 13. A compound of formula (I) according to claim 1, wherein R₉ signifies hydrogen.
 14. A compound of formula (I) according to claim 1, wherein R₁₀ is hydrogen, C₁–C₄-alkyl or halo-C₁–C₄-alkyl.
 15. A compound of formula (I) according to claim 1, wherein R₁₀ is hydrogen or C₁–C₄-alkyl.
 16. A compound of formula (I) according to claim 1, wherein R₁₀ is hydrogen.
 17. A compound of formula (I) according to claim 1, wherein a signifies 1, 2 or
 3. 18. A compound of formula (I) according to claim 1, wherein a signifies 1 or
 2. 19. A compound of formula (I) according to claim 1, wherein a signifies
 1. 20. A compound of formula (I) according to claim 1, wherein b is 0, 1, 2 or
 3. 21. A compound of formula (I) according to claim 1, wherein b is 0 or
 1. 22. A compound of formula (I) according to claim 1, wherein b is
 0. 23. A compound of formula (I) according to claim 1, wherein Ar₁ and Ar₂, independently of one another, signify unsubstituted phenyl or phenyl which is substituted once or many times, whereby the substituents may be independent of one another and are selected from the group consisting of halogen, nitro, cyano, C₁–C₆-alkyl, halo-C₁–C₆-alkyl, C₁–C₆-alkoxy, halo-C₁–C₆-alkoxy, C₂–C₆-alkenyl, halo-C₂–C₆-alkenyl, C₂–C₆-alkinyl, C₃–C₆-cycloalkyl, C₂–C₆-alkenyloxy, halo-C₂–C₆-alkenyloxy, C₁–C₆-alkylthio, halo-C₁–C₆-alkylthio, C₁–C₆-alkylamino, di-C₁–C₆-alkylamino, C₁–C₆-alkylcarbonyl, halo-C₁–C₆-alkylcarbonyl, C₁–C₆-alkoxycarbonyl, C₁–C₆-alkylaminocarbonyl and di-C₁–C₆-alkylaminocarbonyl; R₄, R₅, R₆, R₇ and R₈ are, independently of one another, hydrogen, halogen, unsubstituted C₁–C₆-alkyl or C₁–C₆-alkyl which is substituted once or many times, unsubstituted C₂–C₆-alkenyl or C₂–C₆-alkenyl which is substituted once or many times, unsubstituted C₂–C₆-alkinyl or C₂–C₆-alkinyl which is substituted once or many times, whereby the substituents may each be independent of one another and are selected from the group consisting of halogen and C₁–C₆-alkoxy; unsubstituted C₃–C₆-cycloalkyl or C₃–C₆-cycloalkyl which is substituted once or many times, whereby the substituents may be independent of one another and are selected from the group consisting of halogen and C₁–C₆-alkyl; or unsubstituted phenyl or phenyl which is substituted once or many times, whereby the substituents may be independent of one another and are selected from the group consisting of halogen, nitro, cyano, C₁–C₆-alkyl, halo-C₁–C₆-alkyl, C₁–C₆-alkoxy, halo-C₁–C₆-alkoxy, C₁–C₆-alkylsulfonyl, halo-C₁–C₆-alkylsulfonyl, C₁–C₆-alkylamino or di-C₁–C₆-alkylamino; W signifies O, S or N(R₉); R₉ signifies hydrogen or C₁–C₄-alkyl; X signifies N(R₁₀); R₁₀ signifies hydrogen, C₁–C₄-alkyl or halo-C₁–C₄-alkyl; a signifies 1, 2 or 3; and b signifies 0, 1, 2 or
 3. 24. A compound of formula (I) according to claim 1, wherein Ar₁ and Ar₂, independently of one another, signify phenyl that is either unsubstituted or substituted once or many times, whereby the substituents may be independent of one another and are selected from the group consisting of halogen, C₁–C₆-alkyl, halo-C₁–C₆-alkyl, C₁–C₆-alkoxy, halo-C₁–C₆-alkoxy, C₃–C₆-cycloalkyl, C₁–C₆-alkylthio, halo-C₁–C₆-alkylthio, C₁–C₆-alkylcarbonyl, halo-C₁–C₆-alkylcarbonyl, C₁–C₆-alkoxycarbonyl, C₁–C₆-alkylaminocarbonyl and di-C₁–C₆-alkylaminocarbonyl; R₄, R₅, R₆, R₇ and R₈ are, independently of one another, hydrogen, halogen, unsubstituted C₁–C₆-alkyl or C₁–C₆-alkyl which is substituted once or many times, unsubstituted C₂–C₆-alkenyl or C₂–C₆-alkenyl which is substituted once or many times, unsubstituted C₂–C₆-alkinyl or C₂–C₆-alkinyl which is substituted once or many times, whereby the substituents may each be independent of one another and are selected from the group consisting of halogen and C₁–C₆-alkoxy; unsubstituted C₃–C₆-cycloalkyl or C₃–C₆-cycloalkyl which is substituted once or many times, whereby the substituents may be independent of one another and are selected from the group consisting of halogen and C₁–C₄-alkyl; or unsubstituted phenyl or phenyl which is substituted once or many times, whereby the substituents may be independent of one another and are selected from the group consisting of halogen, nitro, cyano, C₁–C₆-alkyl, halo-C₁–C₆-alkyl, C₁–C₆-alkoxy or halo-C₁–C₆-alkoxy; W is O or S; R₉ signifies hydrogen or C₁–C₂-alkyl; X signifies N(R₁₀); R₁₀ signifies hydrogen or C₁–C₄-alkyl; a signifies 1 or 2; and b signifies 0 or
 1. 25. A compound of formula (I) according to claim 1, wherein Ar₁ and Ar₂, independently of one another, signify phenyl that is either unsubstituted or substituted once or many times, whereby the substituents may be independent of one another and are selected from the group consisting of halogen, C₁–C₆-alkyl, halo-C₁–C₆-alkyl, C₁–C₆-alkoxy and halo-C₁–C₆-alkoxy; R₄, R₅, R₆, R₇ and R₈, independently of one another, signify hydrogen, halogen, C₁–C₄-alkyl or halo-C₁–C₄-alkyl; W signifies O; R₉ signifies hydrogen; X signifies N(R₁₀); R₁₀ signifies hydrogen; a signifies 1; and b is
 1. 26. A compound of formula (I) according to claim 1, named 3-(2-chlorophenoxy)-2-hydroxy-2-methylpropionitrile.
 27. Composition for the control of parasites comprising at least one compound of formula (I) according to claim 1, in addition to carriers and/or dispersants.
 28. A method for controlling parasites comprising applying to said parasites or its habitat a parasiticidal effective amount of at least one compound of formula (I) of claim
 1. 29. The method of claim 28 wherein said parasiticidal effective amount of said at least one compound of formula (I) of claim 1 is administered to an animal host of said parasite.
 30. The method of claim 29 whereby said at least one compound of formula (I) of claim 1 is administered to said animal host topically, perorally, parenterally, or subcutaneously.
 31. The method of claim 28 whereby said compound is in a formulation consisting of the group of pour-on, spot-on, tablet, chewie, powder, boli, capsules, suspension, emulsion, solution, injectable, water-additive, and food-additive.
 32. The method of claim 28 wherein said parasites are helminthes.
 33. A method of treating an animal for parasites comprising administering to said animal in need of treatment thereof a parasiticidal effective amount of the composition of claim
 27. 34. The method of claim 33 wherein said administration to said animal is topically, perorally, parenterally, or subcutaneously.
 35. The method of claim 33 wherein said composition of claim 27 is in a formulation consisting of the group of pour-on, spot-on, tablet, chewie, powder, boli, capsules, suspension, emulsion, solution, injectable, water-additive, and food-additive.
 36. The method of claim 33 wherein said parasites are helminthes.
 37. A method for the preparation of compounds of formula (I) in free form or in salt form, according to claim 1, wherein X is defined as given for formula (I) with the exception of NH, comprising reacting a compound of formula (II)

wherein R₄, R₅, R₆, R₇, R₈, Ar₂, W, a and b are defined as given for formula (I), with a compound of formula (III)

wherein Ar₁ is defined as given for said formula (I), X is defined as given for formula (I) with the exception of NH, and Q is a leaving group, and optionally separating the mixture of isomers.
 38. A method for the preparation of compounds of formula (I) in free form or in salt form, according to claim 1, wherein X is NH, comprising reacting optionally in the presence of a basic catalyst a compound of formula (II)

wherein R₄, R₅, R₆, R₇, R₈, Ar₂, W, a and b are defined as given for formula (I), with a compound of formula (VI) Ar₁—NCO  VI, wherein Ar₁ is defined as given for formula (I), and optionally separating the mixture of isomers.
 39. A compound of formula (I) according to claim 1, named 4-trifluoromethylphenyl)-carbamic acid-2(2-chlorophenoxy)-1-cyano-1-methyl-ethylester. 